A Foley artist is the person who creates the natural, everyday sound effects for films or commercials. A Foley "fartist," apparently, is someone who does so using only his ass. In this video from Wieden + Kennedy, one such fartist named Myron Lefkowitz (aka "a farteur, a flatulist, but above all … a professional") records unlikely effects for the MySims Racing game from Electronics Arts. Gamers like farting, so this should be right up their alley.
—Posted by Tim Nudd