look up any word, like darude - sandstorm:
 
7.
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 05, 2010
 
1.
A new social networking site that is growing in popularity. Where the Internet goes to complain. www.grumper.org
I posted a grump about swine flu on Grumper. You should check it out and grump it.
by Asyra June 10, 2009
 
2.
A very humorous word for poop.
Damn it, I just stepped in the biggest pile of grumper!
by benwad934 March 30, 2004
 
3.
Addictive website where you can complain about things that annoy you.
I like to use Grumper.org all the time!
by SexualVegan6Love9 June 28, 2009
 
4.
1. A grumpy person 2. Totally lame.
1. Did you hear Denise whining about her hair? She's a total grumper.

2. No more pudding cups? Grumper!
by jatty July 19, 2009
 
5.
A defecation that requires mass force to expel.
Oh man, I can tell this one is going to be a real grumper.
by John Clever November 27, 2002
 
6.
Any toilet, outhouse or fecal collecting area.
Drew just laid a lincoln log in Cab's grumper.
by Phartman February 28, 2013