Portal couch gag

Portal couch gag is a couch gag used in Season 26, in the episode Waiting for Duffman.

Plot
The Simpsons sit on the couch, only to be sucked into a portal. They come in again and the same thing happens two times more. The fourth time, Bart doesn't sit on the couch. As the rest of the family gets sucked in, Bart uses the remote to get rid of the portal. He sits down to watch television when he discovers and holds Homer's decapitated head.

Characters

 * Homer Simpson
 * Marge Simpson
 * Bart Simpson
 * Lisa Simpson
 * Maggie Simpson