The title of this article is a conjectural. Though the topic is found within The Simpsons universe, a proper name is not available.
The Family Couch couch gag is the first couch gag of Season 6.
This time, the couch and the Simpsons have switched roles. The Simpsons sit in mid-air like a couch, then parts of a couch (resembling the family) assemble on top of them. The weight of the couch causes them to fall.