hmmmm, the possibilities are endless.

How about,

You are not only strapped to the table but if you move very much a painful electrical shock is applied to your nipples and clit.

After a few minutes someone comes into the room, but stays in the shadows and refuses to answer your panicy questions. Instead the flip a switch, which turns on a pleasant electrical current to your pussy, and beginst to slowly work you up toward an orgasm.
In the mean time your captor sets up a video camera and then takes a seat to enjoy the view.
You realize to late that if you squirm you will still be painfully jolted, so you must remain very still.

After 15 minutes you orgasm, HARD, and jolt yourself several times in the process. The sensations continue, 2,3,4 orgasms and you are breathing hard and are covered in sweat. 5,6,7 you have lost your voice from screaming, both in pleasure and in agony. 8,9 you are nearly ready to pass out from the overstimulation when you dimly realize it has stopped.

An overpowering light flashes on in your face, effectively blinding you to anything, and anyone else in the room. You are then blindfolded.
You hear a click, and an electric hum as the table which you now realize is motorized, raises your legs high in the air and seperates them. You jump at the feeling of fingers softly exploring your sex. You suddenly realize that the painful shocks have ended as well. Without warning you are sprayed with cold water all over your body. You are sprayed in the face until you realize you are supposed to drink. You are given an enema, and a rubber but plug is inserted, then inflated painfully.
You lie cold, and wet for what feels like an houe but was probably only 20 minutes. The plug is removed and you expell the enema violently. You are then hosed off again before finally being left alone and falling asleep exhausted.

Next morning.....

You wake up still blindfolded, with a bucket of warm soapy water being tossed over you. You feel gentle hands wash you thoroughly, and then rinse you with warm water. You are given some fruit juice and what seems to be an energy bar.

Finally your captor speaks to you but with their voice disguised through some sort of machine. You still have no idea whether they are a man or woman.
Your protests, questions and threats are only met with silence. " today you will become my canvas slut. With that, your captor begins to tattoo your reasts, pussy, and legs while taking their time. This is done over a period of days. When finally you are allowed to see your reflection you find that you are covered with lewd but well done images, of women in many different forms of bondage and torture. Your legs have a fishnet stocking pattern all the way up from your ankles to your waist.

(this could be an elaborate fake or permanent depending on your fantasy)

enjoy...

Robert