When Homer gets a "helper monkey" named Mojo, then lets him live the same lifestyle as himself, making him lazy and fat:

Marge: You told me that monkey would be cleaning the gutters and doing our taxes, and now he just lays there, struggling to breathe!

Homer: What do you expect? His cholesterol's through the roof.

Marge: I want you to take that monkey back to where you got him so he can be rehabilitated and get a second chance.

(Homer drops the monkey off in a basket at the science lab where he got him)

Scientists, upon seeing Mojo: Mojo! What's happened to you? (They extend a speak and say for Mojo to type on)

Mojo (Speaking through speak and say): Pray for Mojo.