I do not believe in gender in the conventional sense. I believe in sex, as in the biological things that determine what's between your legs, but gender is different. Yes, males and females think differently, but that doesn't mean they need to be confined to mental boxes. For example, men should not be expected to be macho just because they have penises. Likewise, women should not be expected to be delicate just because they do not have penises. Obviously, my examples are ridiculous and over-simplified stereotypes, but they do apply in much of Western society's subconcious.
I experiment with gender on a regular basis. For example, I cross-dress daily. It's a comfort thing. Chick clothes aren't comfortable, hence I don't wear them. However, I am incredably flamboyant, a trait often atributed to females and feminine men. I have decided that I have no gender. I have a sex, female, but mentally I am neither or both. On a different note, I tried packing today, in my attempts to create a nutty but believable alter-ego. Having something extra between one's legs takes some getting used to. Sitting is hard, until you get in the groove, so to speak.