Some past updates

Fisting Up To the Limit

Fisting Up To the Limit Two merciless fists go deeper and wider, until you think they will catch your tongue from inside. Nothing for...

Release: Jan. 02 2009
Length: 27 Minutes and 51 Seconds

Pervert Birthdayparty

Pervert Birthdayparty To celebrate her birthday cross dresser Chantal has invited two mistresses. These dominant beauties appear in skintight latex outfits and want be entertained from the ridiculous tranny with an exotic tabledance. Under mean commands, spanking and spitting the slut blame herself in front of the...

Release: Dec. 26 2008
Length: 40 Minutes and 41 Seconds

Filthy Assfisting

Filthy Assfisting A real dirty but extreme hot video! TV Slut chantal suck my long boot heels while telling me she needs a fist training lesson so badly. I order her on all fours on the bench and stuff her insatiable hole with 2 pounds of vaseline. Than i push all the rich fat in with my clenched fist.Thick wads...

Release: Dec. 19 2008
Length: 36 Minutes and 34 Seconds

Strapon Casting

Strapon Casting Not only male slaves, also dominant females are wanted to appear in my videos. Today Christine demonstrates her talents at my little assfucker. With a lot of energy and temperament she began to fuck his throat deep with the black strapon. Then she took him from behind with the whole...

Release: Dec. 12 2008
Length: 49 Minutes and 12 Seconds

A little Slaves First Lesson

A little Slaves First Lesson This small guy came all the way from "Down Under" to experience a live session with me! He wrote me some emails before and so I knew he love tall strong woman who can handle him like a toy. The session includes a lot of amazon fantasies and should be concluded with a straponfuck. Watch how I...

Release: Dec. 05 2008
Length: 20 Minutes and 33 Seconds

The Anal novice

The Anal novice Almost daily emails reach me from candidates who think they are qualified enough to participate in my videos. This one appeared completely dressed in latex and brought one artificial rubber fist with him. He told me that he tried this at home but his efforts failed. So I knowed he wanted to be...

Release: Nov. 28 2008
Length: 30 Minutes and 56 Seconds

Sadistic Anal Nurses

Sadistic Anal Nurses 2 true anal experts and a willing and screaming for more victim demonstrate what can be possible in extreme...

Release: Nov. 21 2008
Length: 20 Minutes and 28 Seconds

Extreme Fist Training Lesson

Extreme Fist Training Lesson For those guys who can’t get enough in their ass! The most extreme way of fisting and only for the advanced is the arm fisting. That means the whole fist goes in with the underarm as deep as possible, stay a while and try to get deeper. Pull all out in one stroke so the hole stay wide open for...

Release: Nov. 14 2008
Length: 19 Minutes and 39 Seconds

Girls want to have Strapon Fun

Girls want to have Strapon Fun I was just busy with TV-slut Chantalsī ass in a private session when my friend Isabelle arrived. Silently she enters the room and without speaking a word she took some rubbergloves and started also to fuck the trannys ass. I got the camera and took some private shots behind her back, also the...

Release: Nov. 07 2008
Length: 38 Minutes and 47 Seconds

Handballing Mistress

Handballing Mistress I was just busy to slap a slave’s face lobster red as my fuckslut Chantal called me to cancel the today planned fisting performance. But all was arranged for filming and so I decided to take this slave`s ass instead of Chantal’s. So he got a wig and stockings, some makeup and after some...

Release: Oct. 31 2008
Length: 49 Minutes and 23 Seconds

Learning by Doing

Learning by Doing A very creepy guy is "Biker-Bob" from Frisco. He likes to travel long distance for a real good hardcore fisting session especially to the famous Dr.Fist. Today also Babsy was here for the first time, only for watch and assist me. My advice for her is: "Learning by Doing" is always the best...

Release: Oct. 24 2008
Length: 22 Minutes and 19 Seconds

Strap On for the Fuckbitch

Strap On for the Fuckbitch Dressed like a cheap whore this fuckbitch is trained with my largest strap on for the weekly meeting of horse cocks in the porn cinema tonight. First I fucked her throat hard in different positions until she nearly chokes. Then later on all fours she gets the monstercock hard from behind until...

Release: Oct. 17 2008
Length: 24 Minutes and 23 Seconds

Trained for Fistfuck

Trained for Fistfuck Really horny and addicted is this TV-Slut for my rubber gloved fists. I train her with strong liquid and teasing her ass with my shiny and soft rubbergloved hands until she scream for getting fistfucked and spear her up to the elbow. See her wide gaping and twitching rectum when I pull out the...

Release: Oct. 10 2008
Length: 23 Minutes and 53 Seconds

Deep Drilled

Deep Drilled This time I perform a real deep arm- and full fisting on my best trained tv-slut. With my long black rubber gloves I fuck her as deep as possible! Like a screwdriver my arm and fist rotates deeper and deeper inside, spread her hole wide with the clenched fist when pulling out to see a extreme...

Release: Oct. 03 2008
Length: 23 Minutes and 16 Seconds

Fisting on the Gynchair

Fisting on the Gynchair Delivered on the gynchair this latex slave experienced a deep and intensive special treatment ... Subdued lighting and a gas mask with special aroma filling increases also the atmosphere. In this video you are very tight turn when rubber gloved hands are demanding their way...

Release: Sep. 26 2008
Length: 21 Minutes and 56 Seconds

Full Fist for Igor

Full Fist for Igor Last week a fan from Russia wrote me an email that he would travel here for business and by this opportunity to get an audience with Dr.Fist. He arrived in a dark suit with sunglasses, wanna be very cool... After a short talk I send Igor in the bathroom to undress except a pig mask and take...

Release: Sep. 19 2008
Length: 40 Minutes and 32 Seconds

Maximum Perversum

Maximum Perversum Today a very strange freak arrived here in my studio: He brought for me long blue leathergloves and for himself a very realistic rubberpigmask. Asked me for that I squeeze some ripe bananas in front of his face as it would be his small soft penis. Naked, except his pigmask and horny as hell he...

Release: Sep. 12 2008
Length: 26 Minutes and 50 Seconds

Anal Extreme

Anal Extreme This LOULDMOUTH knows my website for years now and asked me for a customvideo with himself as analslave who is able to swallow two fists at the same time and get fucked by this huge package... We started with a real giant strapon nearly 50 cm long and thick like my underarm for warm up, then I...

Release: Sep. 07 2008
Length: 30 Minutes and 42 Seconds

Good Neighbourhood Part 2

Good Neighbourhood Part 2 In the meantime the hole is so wide and easy to enter that there was no problem to fist her with two arms nearly up to the elbow at the same time. It looks like her fisting neighbour will crawl completely...

Release: Sep. 03 2008
Length: 21 Minutes and 14 Seconds

Forced Sissywhore

Forced Sissywhore The only purposal for a small penis crossdresser like Chantal is to serve us as a little slutty sissy maid or as a whore, earn money for her goddess on the streets. To perfect this transformation every candidate has to remove all male attributes so good as possible. Shave all bodyhair, hide...

Release: Aug. 27 2008
Length: 43 Minutes and 55 Seconds

Assfuckerīs Nightmare

Assfuckerīs Nightmare He didnīt knew that this tall lady on the fetishparty was waiting for fresh submissive slavemeat... He should be her first playtoy for tonight. And she like to play hard with him... After prepare him with a large dildo she leads him to the fisting chamber where he has to wait head down and...

Release: Aug. 22 2008
Length: 29 Minutes and 28 Seconds

Good Neighbourhood

Good Neighbourhood Crossdresser Chantal is totally down. Her well hung black lover abuses her financially and donīt appear to their rendezvous. Frustrated and disappointed (s)he calls her neighbour and best friend who is coming over quickly to drink some wine and talk about the bad guy who take advantage of Chantal...

Release: Aug. 15 2008
Length: 23 Minutes and 55 Seconds

Personal Pussyboy

Personal Pussyboy Lady Sarah has planned a delightful evening with one of her favourite slaves... A male slave she calls "Pussyboy" is soon to become personal Bitch! At first he has to kiss the feet and heels of his mistress, then worship her beautiful big round butt, wrapped in a skintight black latex...

Release: Aug. 09 2008
Length: 25 Minutes

Forgotten Strapon!

Forgotten Strapon! Yesterday afternoon I turned back into the studio to getting my big black Strapondildo which I needed for a later escort. Lady Sarah was just finished with putting on makeup, stockings, delicate lingerie and heels on a crossdresser when I appeared quite surprisingly... The little slut was...

Release: Aug. 01 2008
Length: 28 Minutes and 18 Seconds

Fistingsession with Mistress Linda

Fistingsession with Mistress Linda Experience a very intense and extreme analsession with the fabolous Mistress Linda! Starting slowly in chapter 1 with slow teasing and preparing the slave until he begs for more ... and more he will get! From one fist to double fist - deep and hard or soft and slow. You will see this...

Release: Jul. 25 2008
Length: 20 Minutes and 15 Seconds

Whore training

Whore training After the TV-whore Gina spent the whole night on the trans-boulevard, in the morning she had to report to her money Mistress, who was already quite impatient about the banknotes. The gain was not exactly impressive, so that it was again necessary to deliver an exercise lesson concerning blow...

Release: Jul. 13 2008
Length: 45 Minutes and 3 Seconds

The Dildo-Olympics

The Dildo-Olympics Tv-slut Gina gets a perfect make up and a sexy outfit. Her application as a new actress for my video production has to be tested with a large collection of XXL Dildos and with the whole fist of nearly both hands at the same time. Result: Usable material with a high wear resistance that can be...

Release: Jul. 04 2008
Length: 59 Minutes and 14 Seconds

Basic training with Dr. Faust

Basic training with Dr. Faust I show you once again on this insatiable Fuckslut as a right executed Anal strain is carried out. After receiving the tribute and clean my new boots it was time to take place and high buckles the legs for the ideal access to the "working area". Since the training target "Fistslut"...

Release: Jun. 18 2008
Length: 57 Minutes and 9 Seconds

Bizarre Anal Excesses!

Bizarre Anal Excesses! You want it again properly fucked up and horny? No problem! Today the two of us take on this little sissy pig slut the house way. After the slave sucked hard our huge dildoes and he got already so wet that we could press our cigarette holders in his cock-sucking mouth and on his anus, I took...

Release: Jun. 06 2008
Length: 42 Minutes and 14 Seconds

Cuckold Slave

Cuckold Slave While his mistress is answering her emails her chubby houseslave is busy cleaning her dirty boots with his tongue. Like a dog he is chained with his collar at the bottom of the desk. There is a lot of dirt and even a chewinggum to remove from the soles from the last fetishparty that she has...

Release: May. 24 2008
Length: 16 Minutes and 10 Seconds

Hot And Nasty Bitchtraining 2

Hot And Nasty Bitchtraining 2 After some strokes with the strapon-dildo this filthy bitch begs for more and more and larger stuff. No problem for Lady Adora and her large collection of huge analtoys.First the 16 inch mulatto wents in like a hot knife in butter and while fucking hard and talking dirty to the bitch and the...

Release: May. 18 2008
Length: 11 Minutes and 43 Seconds

Hot and nasty bitchtraining pt. 1

Hot and nasty bitchtraining pt. 1 The blonde bombshell is dressed in an exciting mistress pvc outfit with thighhigh boots and teasing you with slowly oiling up and massage her giant boobs. A horny crossdresser is on his knees and begs her for her strapon, but she like to let him wait and dominate and make him more horny before he...

Release: May. 12 2008
Length: 21 Minutes and 8 Seconds

Extreme Dildo And Fistfuck

Extreme Dildo And Fistfuck On special request of a member I did this video together with my best fuckslut. Only the largest dildos and the clenched rubberfist were used here. Very hot action, dirty talk to the audience. Take a place in the first row and watch me stretch this filthy hole to the maximum. Extreme...

Release: May. 05 2008
Length: 27 Minutes and 13 Seconds

The Pimp Mistress

The Pimp Mistress I am your Pimp Mistress, little pussyboy! I will train you to my male whore, later send you to a gay bar to earn a lot of money for me. You will wear only chaps or a buttfree string and a collar. In the bar you are my slut for rent. Yes, i will sell your virgin ass like a pimp to all the well...

Release: Apr. 20 2008
Length: 21 Minutes and 43 Seconds

The cruel Goddess part 1

The cruel Goddess part 1 3 slavecreatures were captured by the Cruel Goddess. After a humilating markingceremony they experience the true hell on earth in the rooms of the Bloodcountess Bathory. Like with windmillvanes the Cruel Goddess distributes countless violent faceslaps in meaty faces, brings the pure fear out of...

Release: Apr. 06 2008
Length: 28 Minutes and 30 Seconds

The Lovedoll

The Lovedoll Her ugly fat face rich covered with heavy makeup and thick red lipstick this cheap sissy whore is on her knees again. Ready to get another hard fuck from my realistic monsterdong. First I order her to deepthroat this fat schlong until she choke. That bring me in the right mood to fuck her face...

Release: Mar. 28 2008
Length: 14 Minutes and 7 Seconds

Suck Fuck and Fist Orgy

Suck Fuck and Fist Orgy Now she is wide enough and begging me for the "king" of dildos fixed on my strap on belt. With one hard stroke this giant is completely in her dripping and twitching pussy. I fuck her hard as I can, spank her fat butt at the same time with my gloved hands until it glow firered. A real hard and...

Release: Mar. 25 2008
Length: 21 Minutes and 5 Seconds

The Dwarf 3

The Dwarf 3 This little guy from Australia begged me for a session in which he wanted to be overpowered by a taller stronger woman, humilate as an ashtray, faceslaps, shoecleaner, human toilet, height-and musclecomparism and at least strapon-fucked by the goddess. A video without cuts, extra lights or...

Release: Mar. 15 2008
Length: 19 Minutes and 5 Seconds

The Fistress

The Fistress In every possible position the FISTRESS screws and pushes her rubbercladded fists in the slutīs ass that the rosebud pops out wild and noisingly twitching. No mercy for this little asslut. There is no escape from the 2 fast and furious fists... At the end we have here a wide gaping hole....

Release: Mar. 07 2008
Length: 26 Minutes and 23 Seconds

Strapon And Dildotraining with Dr.Fist

Strapon And Dildotraining with Dr.Fist So, you want to be a perfect sissy slut do you? Well I think at first you give a good head to my strapon. Make him stiff and horny for me... Now bend over the bench for me bitch and raise up your ass... Your mistress has something in the mind for this first lesson... A good slut should be able...

Release: Mar. 01 2008
Length: 26 Minutes and 19 Seconds

Strap On Beauties pt.2

Strap On Beauties pt.2 2 nasty teachers will make also you beg for our dildos and fists. The complete part 2 (StrapOn-,Dildo and Fistfucking)! We know exactly what we do in our strap-on school! First on your knees little cocksucker and swallow and lick our large rubber strapon. Make it stiff and horny! If you...

Release: Feb. 26 2008
Length: 36 Minutes and 18 Seconds

Strap On Beauties pt.1

Strap On Beauties pt.1 Today we have invited our little gay slave to teach him a lesson in double female domination. After he has served us champagne on his knees and worshipped our heels, he has to undress and presenting us his naked ass. My fingers explore his little hungry hole while my friend rub her strapon in...

Release: Feb. 22 2008
Length: 20 Minutes and 50 Seconds

Visit Fom The Strap On Queen

Visit Fom The Strap On Queen Look what I have here for you... be patient, first only look and worship my precious strapon. That is what makes you crazy, isnīt it? Thatīs what you need, a strong mistress who brings out and advances your female attitude... A tall powerful and strict Amazon in boots... who treats you...

Release: Feb. 19 2008
Length: 25 Minutes and 31 Seconds

A strict Punishment

A strict Punishment I was in an aggressive mood this afternoon and both slave creatures failed in any of their efforts to give me a good service or satisfy me in any way. So they got a full service from me in hard whipping, smoking, human ashtray, spitting and spanking until their asses and faces glow fire...

Release: Feb. 09 2008
Length: 25 Minutes and 43 Seconds

BEG 4 IT,PUSSYBOY

BEG 4 IT,PUSSYBOY Are you really horny, little pussy boy? Ready and willing? Your asshole needs a good fucking? Ok, come on! Get out your favorite dildo! Watch and listen and rub your own small penis while I tell you all about that you are a little cock whore. Then naked on all fours like a dog! Grease that...

Release: Feb. 02 2008
Length: 12 Minutes and 31 Seconds

DEEP AND WIDE-DOUBLE FISTING

DEEP AND WIDE-DOUBLE FISTING All you need to watch this video is a little brown bottle with a strong aroma and a hungry ass cunt like this little slut! Then I show and explain you what I can do with my well greased, large rubber gloved hands and of course the clenched fists. 11 inches will stretch also your rectum to the...

Release: Jan. 26 2008
Length: 19 Minutes and 14 Seconds

Open Wide,Fukking Baldhead

Open Wide,Fukking Baldhead One day I made a home visit by a real pervert bastard! This wealthy cross dresser paid a lot for a real hardcore session with "Crisco", fat dildos and of course a lot of "Aroma" and my famous steel fist which I ram full force in this pig's asshole until at least a large baseball bat find its...

Release: Dec. 14 2007
Length: 28 Minutes and 54 Seconds

The Excess-Ultimate Fisting

The Excess-Ultimate Fisting Deep and wide! Watch me perform the ultimate fisting session with my elbow long rubber gloves, a lot of "aroma", grease and stimulating views and comments! A video you will never forget! Get out your greatest plugs, dildos and watch it. You will love this video! Slow action and many...

Release: Dec. 08 2007
Length: 25 Minutes and 45 Seconds

From a Slave to a Slut (Day1)

From a Slave to a Slut (Day1) This slave is trained by me in different steps to a submissive cock sucking, spit- and p**drinking, ass fucking dirty and filthy whore. The day he had to crawl in front of me like a dog, got many hard face slaps, spanking his ass, spit in his toilet face, total verbal abuse, suck large dildos...

Release: Oct. 12 2007
Length: 25 Minutes and 46 Seconds

Total Transformation

Total Transformation Lady Sarah prepares a male slave into the perfect slut. It starts with worship her feet, than Lady Sarah order him to dress up in stockings, sexy underwear and a wig. After getting a nice makeup this slave doesn’t recognize himself. When the "Queen Of Face slaps" Lady Asmondena has arrived...

Release: Oct. 10 2007
Length: 46 Minutes and 53 Seconds

Hot For Spit and Strapon

Hot For Spit and Strapon This evening I told my slave about a large 14 inch Strapon which I bought some time ago. He didn't believe me that someone would be able to take this giant large tool in his ass or even get fucked with it. So I came in the mood to demonstrate it on him! First I ordered him to strip naked on...

Release: Aug. 11 2007
Length: 16 Minutes and 44 Seconds

Homerun for a little Asshole

Homerun for a little Asshole Extreme Assfisting Lesson for an old pervert bastard. He begged me for a strict and messy session. First he has to pay me before anything goes. While he is licking my boots clean until I have finished my cigarette, I tell him that would be a special pleasure for me to slap his chubby face hard...

Release: Jul. 04 2007
Length: 17 Minutes and 27 Seconds

Fucked by the Musclegoddess

Fucked by the Musclegoddess An extreme powerful assfuck from largest dildo to deep and wide fisting.See the hole gape and blw out with every hard...

Release: Jun. 23 2007
Length: 29 Minutes and 9 Seconds

Rubberdoll

Rubberdoll Rubber dolls passion is to be completely dressed in heavy rubber. The Rubber doll has to serve us this afternoon as our personal maid and useful object. After serving us some champagne we took a little time to inspect this living rubber doll. Testing first his skills in worship and cleaning our...

Release: Jun. 17 2007
Length: 58 Minutes and 55 Seconds

Take it All

Take it All In the private clinic from my friend Lady Sarah a little pussyboy experiences a very special treatment from 2 absolutely nasty nurses who had a lot of evil fun to rip his ass in two pieces. All methods were used from poppers in the gasmask and XXl Dildos until the whole fists from both ladies...

Release: Jun. 03 2007
Length: 37 Minutes and 53 Seconds

Casting with the Strapon Goddess

Casting with the Strapon Goddess This day I invited several candidates for a new assfucking hardcore video. One after the other was tested with large dildos. At least only one was able to swallow all what I want. From large dildos to the whole fist. The winner got a good strict assfuck from me and is invited to the next...

Release: May. 26 2007
Length: 31 Minutes and 21 Seconds

Slave to Gloves

Slave to Gloves Do you have also a strong fetish for tall and athletic amazons and shiny rubber? Maybe also hands in gloves? Strong female hands which can use you like a little toy? This mistress`s large strong hands in rubbergloves will also slap, and smother you! The little pussyboy is so crazy for my...

Release: Apr. 24 2007
Length: 41 Minutes and 39 Seconds

Watch me fuck the pussyboy

Watch me fuck the pussyboy First stretching his rectum that he can swallow my large black strapon! All that made him so horny I can squeeze and milk his balls and cock and fuck him a little with his own small dick! Finally I can fuck him like a little bitch with his legs up and moaning like a little...

Release: Mar. 21 2007
Length: 19 Minutes and 30 Seconds

Taste My Fists

Taste My Fists Dr.Fist gives a new rude lesson in extreme assfisting, holespreading, how to use the "aroma", etc. Watch her whole clenched fist rip off this candidates...

Release: Mar. 05 2007
Length: 13 Minutes and 1 Second

Strapongoddess Fucks the Tranny

Strapongoddess Fucks the Tranny Dressed in my strict latex catsuit with thighhigh boots and gloves I fuck and f..t this pussyboy in all variations and positions on my large rubberbed. After a little blowjob and some faceslaps a gasmask is fixed on her head and soon her asspussy is ready and willing not only for the 14 inch...

Release: Feb. 21 2007
Length: 27 Minutes and 17 Seconds

Berta Buttīs Fistingtrip

Berta Buttīs Fistingtrip Ridicoulous crossdresser Berta Butt was begging me per e-mail for an extreme assfucklesson. So I order this little horny sissyslut in my studio and after some verbal humilation and paying me the tribute (s)he is ordered to kneel like a dog on my special bench where I first bound her balls to a...

Release: Dec. 20 2006
Length: 29 Minutes and 8 Seconds

4 fists for one asshole

4 fists for one asshole Lady Asmondena and her friend Linda braun breaks open a perverted pig's ass to the maximum, fisting and milking him out over his prostrate and send his useless body into pig's...

Release: Nov. 15 2006
Length: 46 Minutes and 29 Seconds

A Special Treatment From Dr. Fist

A Special Treatment From Dr. Fist An absolute Devilish idea from the cruel mistress: Get a realistic latexpigmask, fill a lot of strong "aroma" in a piece of cloth and stuff it in the nosearea of the pigmask... Than pull the pigmask over the head of this assfucker... wait a little while until he is totally relaxed and on his...

Release: Oct. 30 2006
Length: 16 Minutes and 23 Seconds

16inch pig meets the Strapongoddess

16inch pig meets the Strapongoddess This unsatiable slavepig needs it hard,so i fixed a 16 inch realistic mulattocock on my strapon-belt to rip his ass in two half pieces. Watch me fuck him in the most extreme and humilating way until his rectum is gaping and...

Release: Sep. 30 2006
Length: 50 Minutes and 23 Seconds

Hard Strapon Lesson

Hard Strapon Lesson Crossdresser Roberta is crazy for "poppers" and gets an extra hard strapondildofuck with a lot of spanking and twisting and of course my favorite 14" inch monster strapon. "Come On Slut! Spread your asscheeks wide and let me...

Release: Jun. 22 2006
Length: 53 Minutes and 55 Seconds

A hard sluttraining

A hard sluttraining Training a TV-Slut to my personal bitch! From hard faceslapping over strapon ,fist and...

Release: May. 24 2006
Length: 23 Minutes and 15 Seconds

Training my TV-Whore

Training my TV-Whore A blonde wig on the head and dressed in a pvc-maid uniform with gloves and boots this slave is trained into a submissive tv-slut. At my heels and dildos he learns to suck cock, also is used as a human ashtray and spittoon. He also gets instructions how to move sexy in his outfit and satisfy...

Release: Jun. 10 2005
Length: 36 Minutes and 19 Seconds

Fistinglesson with Dr.Fist part 1

Fistinglesson with Dr.Fist part 1 Dr.Fist performs a showfisting to the audience,explaining what can happen in extreme fullfist assfisting , holespreading,how to use the "aroma" in a gasmask,etc.Watch her whole clenched fist and a giant dildo bring this rosebud to heavy blowouts.Many closeups.30...

Release: Jan. 01 2003
Length: 25 Minutes and 49 Seconds

Perverted Orgy

Perverted Orgy By special request a custom video which is dirty and filthy but much fun! Dressed in a black latex-catsuit and sitting on a pigslave’s back I stuff all kind of vegetable in his asshole. Sometimes I set an enema with cream which is coming out in a wide stream. He also has to sniff some...

Release: Jan. 01 1970
Length: 33 Minutes and 7 Seconds