by Phartman February 28, 2013
A decorative bumper commonly found on Jeep Wranglers that combines a bumper and grill. A must have bolt on part for any JK mallcrawler with 20"+ wheels that wants to distinguish themselves from the standard "Angry Eye" jeep.
"Kyle just dropped $1500 on that new Fabfours Grumper, friggen shame he he didn't spend it on lockers, eh? "
by Hokenstad July 30, 2019
Queen of the Jews annn'er fuckin' cheers up. Reeks the fuck of bad fuckin' attitude. It loves itself some purple and turns out ta be fuckin' latino! All it wants to do is grump, which earns it some lovin' from its UMR fam. Lastly, it has been known to wreck a FREC or two in her time.
by I am an Oil Man February 06, 2010
An explosive shit. Comes pouring out of your ass with seemingly no end to the flow. Like a hot waterfall of shit.
I ate some bad oysters last night and today I experienced the worst Niagara Grumper. I couldn’t get off the shitter.
by Eaton Holgoode January 25, 2018
damn im never gonna hti a mexican buffet liek that again, i had to pump a grumper really bad ten minutes later
by collinD May 27, 2006
arif khan (at the weekend)
by preston outatime March 22, 2005
Noun - "That kid is the epitome of a punched grumper."
Verb - "Oh shit, dude. I gotta punch a grumper."
Adjective - " That bitch burnt me worse then that punched grumper from KFC last night."
Verb - "Oh shit, dude. I gotta punch a grumper."
Adjective - " That bitch burnt me worse then that punched grumper from KFC last night."
by The Grump Puncher December 04, 2008