I don't know that i am funnier, but I have always used humor to relate the irony that I saw in the word around me, and to deal with uncomfortable situations. The real irony was my insides not matching my outsides, and that was also the basis of the discomfort within me (oh, if you only knew ...)
I recently began to examine my use of sarcasm, and why I often responded sarcastically in certain situations. I have come to realize it afforded me two benefits. First, not being macho as a kid, I couldn't easily defend myself physically. So sarcasm was my way of putting you on notice that I could hurt you in another way. I was essentially drawing a line in the sand, and when you stepped over, I would zap you with my mouth. Also, lacking self esteem, it was my way of letting you know how clever I am. I now recognize that this brand of humor was based totally on fear. Over time, as I have become less afraid, my sarcasm has diminish. I still have a sense of humor, but now it is more the self deprecating sort -- able to laugh at the crazy things I do, but all the while knowing that I am OK.