Normally, the MPAA allows one f-word for a PG-13 movie and any more result in the R. When asked by Twitch about this, Lee Hirsch said the following:
“‘I’m certainly not willing to cut the scene that’s causing us trouble, I’ll make that clarification, the one that’s got us in trouble. There’s six curses in the film, a couple I could live without having, but the scene that they’re really rating us for is the one I won’t cut, the one on the bus.”