Top Definition
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.
by Siducci April 17, 2007

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When someone gets tired and extremely grumpy
Why are you so grumpy right now?

"im tired"

no your being a grumpasaurus!
by tc61 April 22, 2011

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Lotsa space for your liquids.

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The Urban Dictionary Mug

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One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

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A dinosaur that is exceptionally grumpy, this term can be used to describe a woman when she is grumpy especially if she also looks like a dinosaur
guy#1- omg susie was in such a mood today.
guy#2- yeh and she is so fucking ugly
guy#1- what a grumpasaurus
by gapppo June 08, 2010

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt