Pranks that backfire

This week's highlights include a music montage of cats and dogs who do not get along, a package of pranks -- including guys who set up a bucket of water to fall on their roommate's head as she enters the room - a segment entitled "Dogs Eating Ice Cream Versus Dudes Getting Hit in the Junk by Fish," practical jokes that backfire, and a game of "Head, Gut or Groin."