Grump Munchin 

The angry response to licking your girlfriend on demand. Usually because the licker has somewhere to go (i.e. a job, a meeting, watch football on TV.

Sorry I am late, but I had some grump munchin to do before she would let me leave the house.

Grump Munchin by anonymous January 5, 2023

grump-rupter 

Someone who complains about a certain scene of a movie/tv show for no considerable reason, ruining that specific movie or TV show for everyone, including interrupting others angrily and shutting down their opinions.

“Tanner is being a grump-rupter , he interrupted me angrily as I was trying to state an opinion while watching Big Hero 6.”

grump-rupter by ND1299338 February 20, 2025

Game Grump

the art of skipping the tutorial in a game you've never played

i'm gonna game grump it

Game Grump by LiamTAT July 31, 2018

Lap Double Grump 

Where 2 individuals, most likely 2 men, engage in simultaneous pooping whilst on the laps of each other. The partner on top finds a small gap between the bottom partner’s legs. This has only been pulled off a handful of times in recorded history.

My boyski we only have one toilet, might have to pull off the Lap Double Grump

Lap Double Grump by Dmoney1318 April 15, 2022

bust a grump

To defecate.

If I drink milk at breakfast I always have to bust a grump about 10:30.

bust a grump by Charlie Golf April 27, 2004

punch a grump 

To void feces from the bowels. to defecate.

that super burrito from la victoria's making me want to punch a grump.

punch a grump by goner December 22, 2003

Pumpin' a grump

Act of taking a dump. Used when said act was particularly satisfying.

Ben: Damn, your house stinks!
Ryan: Yeah, I just finished pumpin' a grump.

Pumpin' a grump by bneffer January 6, 2009