What, What In the Butt is a song sung by Butters, which became an internet sensation in the episode, Canada on Strike. Although Butters calls it "What, What in the Butt", the news programs and other internet celebrities address it was "What, What in my Asshole."
The song and video are a parody of Samwell's "What What (In the Butt)"" video, which was a popular viral internet video.