To make matters worse, real-life clowns turned up to several screenings, scaring the pants off everyone in attendance.
A Twitter user named Chris from the UK detailed his freaky run-in with one red-nosed terror.
He wasn't alone.
For anyone who really felt like subjecting themselves to complete terror, Alamo Drafthouse Cinemas held "clown-only" screenings of IT.
Come to think of it, maybe we'll just wait to catch IT on Blu-ray...