Weird movie

Can’t remember much about the movie but it’s 2 scenes that I kind of remember,
One scene is where this boy gets into a altercation with a bully and ends up ripping his cheek off with his teeth.
Second scene is I think the same boy murders a bunch of kids with an axe in an barn?
I don’t know second scene I can’t really remember I remember the first scene more vividly.
Please help

First sound sounds a lot like a scene in the film Cooties, with Elijah Wood. Not sure though but its a possibility.