Cartman Gets an Anal Probe
The boys are in the cafeteria and after Chef sees a machine emerge from Cartman's rear end, Chef helps the boys escape the school to save Ike by pulling the fire alarm. They escape outside and Cartman believes that being abducted by aliens was a dream until he is hit by a beam that makes him sing and dance and space ship appears. When Kyle throws a rock at the ship, it fires back and hits Kenny, who ends up getting killed by a herd of cows and a police car.