Originally Posted by Lateralus

Yes, indeed I have.

The reason I asked was because I always have friends or whatnot coming up to me and saying, "Oh, he's so great, we did it like 7 times yesterday, amazing!" When the most amount of times I've done it in one day would be about 3 or 4, and towards the end it just started to hurt. I don't see the attraction, wouldn't it just get worse and worse with each time?