grundle game 

Referring to the potency of an individual's grundle at any given point. Grundle game is produced, and at it's peak, after a sweaty workout with da boyz.

Bruh, I was reppin some mad grundle game after that workout this morning.

grundle game by Furdaboyz June 15, 2017

Grundle; The Grundle Game 

1. Wrinkley Crinkley upside-down valley of skin, containing hair, between the cooter thing and little anal guy.
2. The Grundle Game; the act of randomly punching people's grundles;
Grundle Punching.

Eric Johnson and I punch each other's grundles, and share a mutual love and bond; Sometimes we play "Crotchball" and have to ice our grundles.

Grundle; The Grundle Game by Playa Seventh April 11, 2004

Gamer Grundle Tap 

Masturbating with a Playstation controller vibrating against your grundle.

Fendley was performing the gamer grundle tap wile playing Spider Man 3. OHHHHH! TOBY MAGUIRE!!!!!

Gamer Grundle Tap by TPF COUGAR HUNTER December 31, 2007