For everyone's references, the OP asks what's cool about manhood. A guy is a colloquial term for men and women, it's becoming gender neutral.

I was looking up Generalizations v. Stereotypes and my computer crashed, so I'll keep this short. Generalization is born out of empirical analysis and it's often helpful, it does not need to be judged by its literal truth-value. So all the good things that we can talk about manhood doesn't monopolize those said great human qualities, plus eliminating vocabulary with mankind's history behind would be a sad thing and if we did that, that wouldn't be a human progress.

The way I see it, if we keep talking about great super awesome men's traditional qualities, there won't be anything left that distinguishes between manhood and womanhood (because we've been always cooler!!). Men from the same hood should be able to jest each other just about anything, even the ones that women mock about manhood, including stuff that they call stupidity. Something separates boys from men, but that's not on the agenda here. Boyish stupidity should be intact in every man, that's just my opinion.

So, I keep my promise, this is a lot shorter version than original draft that's gone by now, and I'll leave you true gentlemen with a question.

How about that 'bros before h-h-h-women'?

ETA: You guys drive a motor vehicle better, you fix something, there's your bragging right! If things don't get appreciated, that's not your problem, man. Well, whoever drives stick shift knows about how manual trasmission works so you can scratch that. There was this girl who I'd never seen at a repair shop for boots and bags and stuff, I was expecting to see a guy, my usual guy wasn't there. It was a little awkward moment, and yeah, she missed something I remember that!