A terminally grumpy person, often genetic. Can be modified for various states of grumpitity.

Cheer up, don't be such a Grumpus!

That Grumpus has been growling at me for hours.

A Slumpus (A sleepy Grumpus)

A Lumpity Grumpus (A lumpier than average Grumpus)
by Dar123 January 3, 2009
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A girl; when she wakes up and she is grumpy.
She may punch you, or make rude remarks.
Generally the grumpus has blonde hair and green eyes, and pouts her lower lip when she is angry.
"Wow, she just woke up and hit me in the face, what a grumpus!"
by dominikagirl November 5, 2009
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Marijuana that makes you grumpy when your with your friends or fellow stoners
Maan that weed must be grumpus, everyone is bein so custy
by Ldogg and Kb December 8, 2003
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Marijuana that makes you cranky and or angry at fellow smokers or stoner friends.
Man that buds grumpus, im swayze.
by kb and ldogg December 7, 2003
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1. A feeling one gets after smelling a foul and repulsive odor.
2. A description of something butt-nasty.
1. Man, I shouldn't have eaten that mexican fish, I am feeling pretty grumpus.
2. Finding a crap load of diarrhea in the stall, very grumpus.
by Hansel February 10, 2004
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That moment when you do something so minor that it doesn't matter but its still pretty cockus grumpus, that moment for when you need something to say but you dont know what, cockus grumpus, that moment when you do something so incredibly epic that there is no other way of describing it, Cockus Grumpus
Man 1: ayoo i just flicked this paper off the desk
Man 2: Cockus Grumpus
Man 1:...
Man 2:...
Man 1:...
Man 2: Cockus Grumpus

Man 3: Hey Guys you will never guess what, I just bought 16 pounds of weed!!
Man 1 and Man 2 simultaneously : COCKUS GRUMPUS!!!!
by NotFire05hahafunny8cock December 19, 2021
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grumpymoodyJust what the word implies - a grumpy, ill-temered person.
"man, my boss is a real bo grumpus today!"
by Guy Kemp January 11, 2006
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