Grumpkins 

The game of giving a girl spicy food then having anal sex with her. Then the male would punch the woman in the stomach and scream "GRUMPKINS!" and pulling out before fecal matter lands on the penis. If fecal matter does land on the male penis then the male loses.

I didn't Pull out in time so i lost grumpkins

Grumpkins by Mike Ockhertz December 8, 2009

grumpkins 

recieving head while in the process of shitting.

"That bitch was so nasty she gave me grumpkins!"

grumpkins by mattneesy May 19, 2004

Grumpkins 

Blumpkin from a Solid gold robot

Steve: Dude, I was on the Blumpkin Bus yesterday and i totally got Multiple Grumpkins from that Solid gold Hobot

Grumpkins by shabunia February 13, 2009

grossie grumpkins

The anonymous old man - most likely suffering from some form of dementia - who takes a shit in the sink of public restrooms

Don't go into the bathroom, Bob. It looks like Grossie Grumpkins struck again.

grossie grumpkins by Betty Wagaman October 15, 2006

Gumpins 

When you follow a llama and sniff their buttholes while they eat.. A Plainfield tapers term..

WOWZERS… That guy is really doing a gumpins on that llama right now..

Gumpins by Plainfield taper February 1, 2023

Grumping it

When you skip a tutorial in a video game, and get stuck or lost in something the tutorial taught. A reference to Arin (Egoraptor) of the youtube channel Game Grumps, who would always skip tutorials.

"Bro, you're grumping it! You shouldn't have skipped the tutorial."
"Ah, yeah, I grumped it."

Grumping it by queephlosion December 16, 2020

Forrest Gumpkin 

Recieving oral sex from a retarded girl while taking a crap.

The waterhead with a hockey helmet on gave me a Forrest Gumpkin after she got off the shortbus.

Forrest Gumpkin by miller66 December 16, 2008