Beavis, Butt-head, Stewart's dad - where the hell are they? written on Saturday, February 25, 2006 by Mysteries/Conspiracies Poster Submitted by: Cory Standing What happens to Beavis and Butthead and Stewart's Dad at the end of the episode called "Prank Call", where Beavis and Butthead keep calling Harry Sachz. Harry Sachz said he would gut Mr. Stevenson if he got called again, then Beavis and Butthead call him back. So what's the deal? The conclusion: Well, Cory, here is the deal: Mr. Sachz realized that the real culprit was not Stewart, Stewart's Dad, Beavis, or Butt-head. It was in fact, the toilet. He did not know which toilet to blame so he decided to destroy all the toilets that belonged to any of the previous suspects.