I don't know why, but I love stereotypes. Not so much stereotyping others, I consider myself pretty good about avoiding stereotyping other people because of their race/gender/high-level-of-nerdiness. However, I love embracing as many stereotypical things as I can for myself. I mean, what's not to love? Here's some examples:
As a guy I don't need to shower every day. As an engineer, I don't need to shower every week. As a combination of the two, it turns out I don't have to shower every month. Which saves me all sorts of time, is environmentally responsible, and just plain awesome.
No matter how much I may seem to be aimlessly wandering, I'm a guy so I'm never lost and don't have to ask directions.
Since I'm a guy, I can fix anything. It doesn't matter that I have no prior experience fixing cars or whatever, I can just open it up, start banging away, and viola, fixed. No actual technical/mechanical knowledge necessary.
I wrote (drew) a screen play for a great and manly movie. Average working man (played by the Rock) leaves his home one day to go to his average office job. As he does, it blows up. He goes to the tool shed and pulls out a few pistols, automatic rifles, and a grenade launcher. He fights terrorists, ninja assassins and barbarian hordes in the middle of the jungle. He finds a secret lair and fights the bad guy in his robot contraption that is loaded with guns. And, of course, it ends after the 40 minute fight scene with no explanation as to why his house blew up or who the bad guys were. Now that's what I call a pretty sweet movie.
As an engineer, I am not expected to have social skills, so it is expected of me to commit at least one social faux pas a day, if not seven or eight.
As an engineer, my vocabulary sucks, and I don't even know what faux pas means.
As an older brother I am expected to tease my younger sisters. Not only do I embrace the stereotype, I go above and beyond the call of duty on this one. My sisters are extremely lucky to have such a good older brother.
I'm pretty sure there are a lot more, but, as a guy, I'm lazy and like to think as little as possible, so I'm not going to bother trying to come up with anything else.