I'd probably describe my sense of humor as 'twisted,' I guess. It's not hard to make me laugh, especially when I'm surrounded by my close friends, especially my bandmates.
Depending on where my self-confidence was, growing up, I would use humor either to bring people closer, or to keep them away from certain feelings I had.
I wore goofy hats to school and did musical theater. Most people thought I was a dork. But if you have a sense of humor about it, no one can bring you down.