1) I don't really have a favorite, but the one I use the most would probably be either dickwank or fuckwad.

2)Wow, hard one. I'll discount trolls because that's too obvious (and they're not really around anymore). I would say Mrs. Pascal, but she's not around anymore. For now I'll say WillyJLover.

3) That's probably the deepest question I've ever recieved on one of these. I'd say Death.