1. A very delicious snack with unknown content from a mysterious planet.
2. A popular menu item for Fishy Joe's.
Pop a poppler in your mouth when you come to Fishy Joe's!
Leela isn't eating enough popplers.
In the 30th century, popplers were served for a while at the Fishy Joe restaurant chain after Captain Turanga Leela and her crew discovered tons of them lying in a hole on some unknown planet. Popplers taste delicious and look kind of like popcorn chicken. Warning: excessive consumption may prove hazardous to the continued existence of your species. (From the Futurama episode "The Problem With Popplers")
Pop a poppler in your mouth when you come come to Fishy Joe's/
What they're made of is a mystery, where they come from no-one knows/
You can pick 'em, you can lick 'em, you can chew 'em, you can stick 'em/
If you promise not to sue us you can shove one up your nose!