"It turns out it's man."

Played for laughs in The Scary Door segment that plays over the credits, where a scientist combines the DNA of the world's most evil animals, resulting in a naked guy who walks out of the test chamber and bluntly states "It turns out it's man." This was originally a scene from "The Birdbot of Ice-Catraz", which was cut from that episode due to time constraints.

Example of:
Humans Are the Real Monsters