Some of my favorite videos involve the stupidity of others. So when I saw this video with eight of the dumbest people around, I just had to share it with you.

But it’s not just hilarious. It’s also educational. If you’re an idiot, here are a few things these videos should teach you.

Don’t get involved in extreme sports, under any circumstances. Stay right away from skateboarding or bike tricks.

Don’t try to be clever. Learn to jump into a pool like a normal person because any trick will backfire.

There’s some consolation in knowing most of these accidents have rendered these fools sterile. Stupid like that should never have the opportunity to breed.