10 Best "You Don't Know Who You're Messing With" Horror Movie Scenes

School bullies once again get more than they bargained for, because while Let the Right One In's protagonist Oskar (Kåre Hedebrant) doesn't possess any hidden supernatural abilities, he is best pals with the local vampire, so that's neat.

At the end of the movie, the bullies who have been antagonising Oskar throughout the film force him to try and hold his breath underwater in the school's swimming pool. If he can't last three minutes, they promise to cut one of his eyes out.

But as Oskar is held underwater, his vampiric friend Eli (Lina Leandersson) shows up and promptly dismembers all but one of the assembled bullies, leaving only the most reluctant one alive, albeit clearly traumatised from the bloody insanity he just witnessed.

That's... one way to never be bullied again, right? Oskar may have seemed like an easy target, but the lesson here?

You never know who the easy target's got in their corner. There's subbing in your big brother to help and then there's siccing your pet blood-sucker on the bad guys.