Tremaine was well-versed in the art of pain thanks to a constant exposure to skateboarding mishaps, so when the approached him to direct Jackass he was on board.
Jeff: (about when the studio says he can't do something) We don't take 'no' well. If the studio tells us 'no', we're probably going to go shoot it. No's not a good answer for us. 'Well, why not? Why not? Why not?' Eventually you find out and it's, 'Well, the only problem is you've got to do it like this.' But we're rarely told by the studio that you can't do this or that.