Grunt bag : one who is trying too hard to impress his or her peers. A low totem pole individual who wants to be the best when they can't.
by Deeniceforyoupoo October 2, 2019

by Der Jude February 18, 2018

The sounds caused in the act of straining when you eat too much meat and taking a shit is an hour long endeavor.
by Calicoex11 May 3, 2018

When you fuck someone so hard that they start grunting in an extremely deep voice, often sounding like a shitty Golem from Lord of The Rings. This low grunting will continue until your partner lets out a massive screech. Signifying their change into the Gremlin King/Queen, they are now the ruler of all Gremlins, truly a noble honor.
by Gamer_God_88 December 28, 2020

by Grunt Punt October 8, 2018

A vehicle that has been modified so that it produces a loud, rumbling, aggressive noise when the engine is revved. This modification is known as installing a ‘Grunt Valve’
Dave: Bruv, what was that car that just sped past us, sounded like a TVR or something..?
Joe: Nah mate, saxo.
Dave: Shit man, must have a fat grunt valve innit.
Dave: What you sayin Joe?
Joe Just chillin in the grunt valve innit.
Dave: Fair play, whats the grunt valve sayin?
Grunt Valve: GGRRRRRRR – WAAAAP WAAAAPP WAAAAAAAAAAAAP!
Dave: That’s some serious grunt valve right there Joe, he is on it.
Joe: Innit doe.
Joe: Nah mate, saxo.
Dave: Shit man, must have a fat grunt valve innit.
Dave: What you sayin Joe?
Joe Just chillin in the grunt valve innit.
Dave: Fair play, whats the grunt valve sayin?
Grunt Valve: GGRRRRRRR – WAAAAP WAAAAPP WAAAAAAAAAAAAP!
Dave: That’s some serious grunt valve right there Joe, he is on it.
Joe: Innit doe.
by Badmaninnitdoe October 7, 2010

by The Real Driller July 5, 2021
