I joke a lot. 99% of the time, I joke about things or myself. I'm usually the butt of my own jokes. I'm quite comfortable with myself and don't take myself too seriously, and my girlfriend really likes that. However, if I EVER joke about her, she finds zero humor in it and gets pissed, no matter how inconsequential the joke is. I've noticed this with several other girls I've been somewhat close with, so I'm wondering if this is normal among women or not. I don't seem to have the problem at all with guys.