By Clark Collis
Updated July 13, 2015 at 12:00 PM EDT

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

Elijah Wood talks Cooties and ‘f–ked up’ Greasy Strangler

Elijah Wood and Rainn Wilson battle zombie-kids in Cooties trailer