grumposaurus 

Someone who is very grumpy.

My husband is a grumposaurus before he gets his morning coffee.

grumposaurus by Jerome Santucci June 23, 2008

Gruntosaurus Rex 

taking a dinosaur-sized crap; would win the "shit of the year" contest; the kind of dump where you lose weight.

After not crapping for a week, I sat down and loaded up the bowl with a Gruntosaurus Rex.

Gruntosaurus Rex by DinoDave May 6, 2010

grumpasaurus 

a grumpy person. may or may express said grumpiness with non-human like grunts and sounds. definitely pouty and brooding.

An unexpected snowstorm in April turned Graham from a happy, human boy into a decidedly brooding grumpasaurus.

grumpasaurus by Siducci December 24, 2008

grumpasaurus rex

One who is dour on a colossal scale.

Person 1: "What's wrong with Bill today?"
Person 2: " He lost his wallet this morning and all afternoon he was nothing but a Grumpasaurus Rex to everyone in accounting."

grumpasaurus rex by bmyoung November 25, 2013

Grumpasauras 

Grumpy in a cute, set-in-your-ways kind of way.

He's not mad at you; he's just being a Grumpasauras.

Grumpasauras by Snewz June 24, 2008

Grumpasaurus 

When someone gets tired and extremely grumpy

Why are you so grumpy right now?

"im tired"

no your being a grumpasaurus!

Grumpasaurus by tc61 May 14, 2011

gumpasaurus rex 

the words gump and tyrannosaurus rex put together. to be gumpy means to look stupid or really goofy or lame. a tyrannosaurus rex is the gumpiest dinosaur ever. so when you call someone a gumpasaurus rex you are saying that they are far beyond being gumpy.

mike: look at josh over there, hes such a weirdo.
sam: wow he looks really goofy, call him over here.
mike: hey you, gumpasaurus rex, come over here!

gumpasaurus rex by aimeeleetradmark May 9, 2008