The act of placing ones bare ass on a subject's face while said subject is sleeping.
"Mark fell asleep with his shoes on, so Jason grumped him.
When Mark woke up, he was visibly upset."
by SneezeFart July 21, 2013
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Babblers' House Gnorf
errmm Grumps is like totally the babblers house Gnorf
by Croc October 11, 2003
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This is where two people get them selves a dead body. On acquiring the body they leave it to ripen for two too three days, depending upon the weather.
When the body is deemed to be ready, the grumpers take there positions.
One person (the grumpy) places there head between the body's legs. Whilst the other person (the grumper) Jumps upon the body's stomach.
The result is a spray of blood and guts going all over the place and splattering all over the fucking place.
types of the Grumping:
the Frump
Bumping
Bungee grumping
double grumping
The long grump
The high grump
Obese grumping
Skrumping (this is actually the grumping of a skinny person)
Chewbaccaing
Bongoing
piano grump (dropping a piano on a corpse = shit)
by Grumpette December 02, 2009
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When a certain YouTube video suddenly get a lot of views as a result of being referenced on GameGrumps.

This comes from the YouTube show, GameGrumps. It was created by Dan during Part 14 of their Legend of Zelda: Wind Waker HD series.
That Monty Python skit got a Grump Bump when Arin and Dan acted it out.
by Walter Is White November 16, 2013
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A let’s play YouTube channel staring Arin “Egoraptor” Hanson and Danny “Sexbang” Avidan. Their episodes often involving silly voices, jokes, running gags, making fun of games (typically Sonic the Hedgehog) and insightful advice and life stories. Also shows by the name of Steam Train, Grumpcade and Steam Rolled appear in the channel, although not as frequent, it is also expected for the channel to have various random segments every now and then.
Do you watch Game Grumps?
Who?
You know the let’s play duo involving that one animator and musician?
Nope.
The two dudes who could be in a Pantene commercial .
OH, GAME GRUMPS
by NotEditedbyMattandRyan February 07, 2018
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If I drink milk at breakfast I always have to bust a grump about 10:30.
by Charlie Golf April 27, 2004
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