Boys are stupid and it is fun to laugh at them. I once had a boyfriend whose roommate decided to 'try on' another roommate's contact lenses one day. Who does that? (Answer: boys.)
I haven't seen many girls on YouTube doing stupid stunts or pranks, that territory seems to be firmly held by the males of the species. In this video, a couple of Swedish guys (proving it isn't just American males that have a Jackass mentality) strap TENS units to their arms, crank up the current, and try to make a cake.
You don't have to sit through all of it, but it does get more funny as it goes on.