Top Definition
An alpha breed of Smarmosaur that specializes in being a jerk who tries to get suave with the ladies, but fails due to him not realizing he is coming off as an idiot.
" See that guy Gavin over there? He's known as the Smarmosaurus Rex, he's the only guy who tries that hard to get suave with all the ladies. He's not very likable since he ends up being insincerely ingratiating.
by Bewnam Ajnin April 20, 2008

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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