 CONT: When the Stonecutters are singing "We do", the position of  several characters, particularly the Martian and Chief Wiggum,  change randomly as the camera angles change. The Martian starts at  the end of the table on the right side, with Chief Wiggum two seats  to the left of him. In later shots, the Martian, then Wiggum are  both switched to the same position, midway up the left side. Then,  when the song ends, Wiggum has disappeared, and the Martian remains  in this new position.