My wife and I can not remember what movie this was in. As we remember it a couple was on a date and the "artist" was filling his bowels with paint and "farting" it onto canvases?! Performance art I guess.
Thanks

Possibly one of the scenes of the "Fart Movie?"

Apparently, it was over an hour of persons displaying various uses
Of that.

YouTube - The Fart Movie (http://www.youtube.com/results?search_type=&search_query=The+Fart+Movie)