The title of this article is conjectural. Though the topic is found within The Simpsons universe, a proper name is not available.
The Whack-A-Mole couch gag is the tenth couch gag of Season 8.
The couch is now a giant Whack-A-Mole game, with the Simpson family as the moles. The clown hallucination music from the season six episode Homie the Clown plays as an unseen player tries to hit one of the Simpson moles — and successfully gets Homer.