Embryogenesis couch gag

The Embryogenesis couch gag is the eighth couch gag of Season 21.

Plot
The couch is seen inside a human egg cell, which is about to go through the process of embryogenesis. Each family member is a sperm, where they are swimming towards the egg cell and then sit on the couch, thus making the egg cell fertilized. The fertilized egg cell then starts to divide so rapidly that they develop into a Mr. Burns embryo. The Mr. Burns embryo says, "Excellent!" as he puts his fingertips together.

Character Appearances

 * Homer Simpson
 * Marge Simpson
 * Bart Simpson
 * Lisa Simpson
 * Maggie Simpson
 * Charles Montgomery Burns