In the new horror-comedy Cooties, Elijah Wood, Rainn Wilson, Allison Pill, Jack McBrayer, Nasim Pedrad, and Leigh Whannell play teachers whose young charges start acting a tad strangely after eating bad chicken nuggets.

Did we say “a tad strangely”? Sorry, we meant “chew-your-face-off insane,” as this new clip makes abundantly clear.

Cooties is out Sept. 18, and you can watch the clip in the player above