Futurama S02 E18 The Problem with Popplers

"Defying gravity and common sense."

The crew discovers an irresistible source of food on a distant planet, and brings it back to Earth to be sold at the Fishy Joe's restaurant chain. But when it's discovered that the so-called "Popplers" are actually Omicronian babies, the Omicronians demand recompense.