In reply to Alyson: ay, might also be part of how men relate. Working in all male environments, or spending time with all men can be loads of fun as they probably crack more jokes. To me it's a way to show affection to each other, sometimes sets order of who's top dog (at work).
Women talk about a lot more topics of conversation (been shown in numerous studies) and talk about emotions more.
Some men relate the same way with women, and I find it quite tiring and less relaxing than the occasional bit of repartee, especially if you're trying to talk about how you feel!
Although I must say, I am incredibly funny myself.
I don't need to do it all the time!