What's on your mug?

1. fucking the shit out of an old dude until he has a heart attack 2. tryin to insert your dick into a frisky squirrel.

"I caught that whore fucking my grandpa!" "Yeah man, she was pumping a grumpy" "Last night i was pumping a grumpy, and the mother fucker bit me"

By Big Jerms

Slang for having a bowel movement, pooping, taking a shit, etc

Bro where the hell were you, we lost the game because of you Stfu, I was pumping a grumpy.

By Davehar