The 12-rated UK version has dialogue changes to secure a lower rating. The following lines were removed:
"My thingy smells like lamb chops"
"Did you know he can put his penis in his mouth, the whole thing?"
"His poor rectum is absolutely pulverized, which is not usual for a sheep in this region."
The film was originally given an R rating when first submitted for US theatrical release. Prior to theatrical release, it was then cut in the US for an MPAA PG-13 rated cinema release. This was further cut by the BBFC for a 12A rated cinema release in 2009. An uncut version has been released on home video with a 15 rating in the UK and MPAA Unrated in the US.