Soylent Green

Soylent Green is a gag that has appeared in The Simpsons on several occasions. It is a fictional food product made out of deceased humans that was the subject of the movie with the same title.

Appearances
In Million Dollar Abie the euthanasia center is a spoof of the one in Soylent Green.

Also in Bart to the Future, the future Homer Simpson offers the future Ralph Wiggum some Soylent Green, which causes Ralph to ask "Isn't that made of people?".