I'm not thinking about sex right now. Well, OK, I am; but not that not much. I was mostly thinking about my punctuation just then, but that reminded me of sex.
Its a stereotype. However, it is also a stereotype that is not at all far from reality. [Truth is stranger than fiction, because fiction has to make sense.] The truth is I have seen a large number of males behave in a positively stupid way just because they thought a woman was around. Several times the supposed 'woman' was me! A woman was perceived to be present, and interesting behavior patterns emerged. [Thats when I had shoulder length hair] I met an old man who launched into a detailed and graphic discussion about the physiology of the female pelvis and the best approach angle for penetration. I really feel bad for women in general; how do you pick a decent specimen out of all of these slimebags??? Jerks like that make me a dick, merely by gender association, and I strongly resent that.
If it were up to me I would change the stereotype. Men aren't quite pigs. Men are phalluses with a person attached. The smarter the person, the less the phallus affects his behavior.
Now, assholes? Yeah, probably.