I'm just saying that boys just do the dumbest things imaginable when left to their own devices. Things where you just like, "really?! wtf were you thinking?" Most of those things, you snicker behind their back. Other times, you get angry about how callous they were. When in the end, they weren't thinking.

It's not necessarily doing stuff to be an asshole, though. A male's frontal cortex doesn't finish developing until the late 20's. This results in teen boys doing incredibly stupid, impulsive things and not realizing what they've done until after the act has been completed (if at all). It's exponentially worse with each teen boy added to the mix.