The title of this article is conjectural. Though the topic is found within The Simpsons universe, a proper name is not available.
The Groening's Signature couch gag is the third couch gag of Season 11.
Plot[]
The family runs in and sits on the couch as usual. Marge notices Matt Groening's signature at the bottom of the screen and wipes it off. A Simpsonized caricature of Matt Groening (complete with graying beard, glasses, and a tacky orange and yellow Hawaiian shirt) comes in and resigns the scene. Marge gets shocked by it while Bart, Homer, and Lisa simply look at it.