Clown Buggy
IS
IT

Gonna be a star?
Heading up to the bar again.
Want some more fun?
PUB-CRAWL!

IT managed to destroy the joyful experience of circus going for an entire generation of children.  Thank you Mr. King.  This is not a kinder gentler Buggy.  If IT played Buggy, IT would have eaten Gaimon and sucked out Alvida's brains.
On second, third, and fourth thoughts, IT should not be cast in this movie.