MEAT

what did this anacronim stand for in Sunday's episode?

2ACV15. "The Problem with Popplers" [Aired May 7, 2000]

When the Planet Express crew lands on a previously undiscovered plant, they find that it is covered in a new and delicious animal life form which they call "popplers". These edible and highly addictive "popplers" soon become a new business venture for the crew as Earthlings just can't seem to get enough of these delicacies. The dreaded Omnicrons reveal just what these "popplers" actually are, and seek restitution for Earth's "poppler" consumption.

Mankind for the Ethical Treatment of Animals.

I think it was Mankind. I was too delighted by the picture of a Pig on a swing to remember exactly what he said.

Mankind for Ethical Animal Treatment. There now it makes some semblance of sense.