I'm going to run with the "fantasy" bit. I wrote a science fiction story a long long time ago which had in it a character known as Doctor Killjoy. It was a Matrix, (but I wrote this before the film came out!!!) type setting and he had total control of the computer world. It's a fantasy I've nurtured for many years. Anything can come true. Women can pop into existence at his whim, and have their breasts and weight grow and shrink at his whim. He can beat them down to the bone and have it heal in an instant at his command. He has spe******ed rooms in his massive palace, all for facets of his perverted games. A tit room, like a bouncing castle, but just tits. Floor walls and ceiling, just huge bouncy, warm and accompanied by screams each time he planted his feet on any of them.

A bit more than one sentence, but it's been a good fantasy.