Greek Gods couch gag

The Greek Gods Couch Gag is the couch gag, used in the episode Havana Wild Weekend.

Plot
The couch is made out of clouds, and is resting on top of a heavenly plain of more clouds, in a Greek Mythology environment. The Simpsons are all dressed as Greek Gods and they all magically fly onto the couch, except for Lisa, who's apparently missing. They all look around for her and Lisa suddenly rips out of Homer's head, reading Homer's Odyssey. However, this leaves Homer with a hole in his head. Homer then taken Maggie's passy out of her mouth and puts it in the hole in his head, which then sucks her passy, making the same sounds as Maggie does with her traditional passy sucking.