Time Travel

Aside from the confusion about paradoxes and drastically changing shit, there are of course those things we all would do/change if we could travel through time -- live a healthier lifestyle, be nicer to people, invent facebook, etc. Aside from those obvious and more "meaningful" changes, I'd love to go back in time just to, for lack of a better term, completely fuck with people. Yes, of course I'm going to list a few examples: