Why great-grandpa told us never to moon a donkey...
Caution: rated "R" for "rude."
Found while trolling the deeps of Google image search. I haven't had the nerve or time to check out the other movies here, and given their descriptions on the pages I highly advise you not to either.
Okay, one exception: I recognize this classic Dutch ad from the picture. Rated "R" for language, but priceless.
My kids came home from the Eric Idle concert with an entire 4-minute DVD of the famous "farting preacher" clip. Cripes. Who raised these looneys?
Saw the same "fart dubbing gag" on a Drew Carey show, and it had me on the floor for five minutes.