Grundle Bush 

The pubic hair on the grundle. May vary in color and thickness.

Wow man...your grundle bush is out of control, go manscape that thing.

Grundle Bush by Parttimefan November 20, 2010

grundlebuss 

someone who has sex with a twinkie, and then squeezes the cream out using their legs.

I walked into my boss's office and saw him the riding the grundlebuss, upon him noticing me he squeezed his legs and deflated the twinkie in nervousness, i immediately left.

grundlebuss by chrisalyss September 6, 2009

GrundleBus 

The preferred method of getting from point A to point B, provided that point A is the Asshole and point B is the Ballsack; most often used by homosexual males

Man 1: I plundered Mikes asshole yesterday, then I tickled his scrotum right after
Man 2: How'd you pull it off so fast?
Man 1: Easy, I used the GrundleBus

GrundleBus by The Captian May 5, 2015