This guy's worst nightmare came true when an alligator clamped down on his head!

Now, to be fair the guy put his head in the alligators mouth. Which, we all know, that even if you've trained an animal to do this that they're wild and they can pretty much do whatever they want.

Now, luckily the gator quickly realizes that he should let go and he does. The guy is able to stand up and leave the arena all by himself. So, hopefully he wasn't hurt too badly.