Grumb 

It's when you invent a sign so girls won't notice that you check out their tits. And then get discovered doing your invented sign.

Grumb...

Grumb by KHDT October 10, 2010

Grumb 

When you can't play basketball because you're sitting on the couch naked eating grapes and hoping to score with the lesbians that moved in under you.

I asked Justin if he wanted to play a game of basketball but he said he was too grumbed out. That's whack.

Grumb by JAGDrummer June 12, 2012

Grumb 

A mixture between dumb and gross.

"You are grumb!" exclaimed the naked boy.

Grumb by klam February 1, 2006

Grumb 

Beard crumbs that get caught in grool while their pussy is eaten out

"Grumbs are fucking foul"

Grumb by ButterSpreadBread December 23, 2019

Grumb 

A small otherworldly creature that fits in the palm of your hand. The humans of this world hunt grumbs in the spring (prime Grumb season) but only the bravest of adventures venture into the retarded forest (home to all horrific otherworldly beings)

"No son of mine shall venture into the retarded forest"

"If you want safe passage through the retarded forest you must pay me 3 Grumbs"

"Couldn't pay me a Grumb to do that"

Grumb by Grimnir14-1 April 16, 2023

Grub Snake 

A name that is commonly used by the popular youtube commentator xcalizorz(Bruce) to describe a penis

Jensen has an augmented metallic grub snake.

Grub Snake by Marcus Junius Brutus October 25, 2011

Rumbus grumbus 

Rumbus grumbus is used in the show 'generation loss' on twitch and youtube .It is a word charlie slimecicle used to describe his hunger.

Charlie:what's your name?
Ranboo: ranboo
Charlie:rumbus? Rumbus grumbus? My tummy's a little rumbus.grumbus

Rumbus grumbus by Googoobie June 17, 2023