Grumpy Snail 

The snail that comes out of the Holo-Recorder in the TV show Futurama. When the Holo-Recorder is played badly, the grumpy snail often becomes "too grumpy". Can also describe someone who is grumpy.

Fry played his song so badly, the Grumpy Snail mutated into a horrifying image.

Grumpy Snail by Zide July 6, 2009

Grumpy Snail 

When one partner lays reluctantly on his/her stomach and is then penetrated in the anus by their partner. Said partner has their back haunched for maximum insertion-giving the appearance of the shell.

"Tina owed me a favor so she let me give her a grumpy snail before we left for the party."

Grumpy Snail by fireman623 October 17, 2013