Grundlequaff

The puff of hair located on the ass ball connector.

Darling, please shave your grundlequaff.

by Whoisrandyquad November 11, 2021

Grundlemuffin

The placing of one's fist into one's grundle and letting it bake there for a minute, then removing it and punching another person across the face with it.

Bitch, if you don't shut your mouth, you're gonna get a big ol' grundlemuffin!

by Head Chef McC December 21, 2006