Top Definition
To be utterly cool.
Beyond the point of existing.
Because if you coolasaurus.
You are neato, and a hipster.
& drugs are bad kids.
Samantha is coolasaurus.
by Olgaa! September 14, 2007
The epitimy of cool. Nothing is, was, or ever will be this cool. Usually thought of in dinosaur form.
Look at you! You're a fucking coolasaurus rex!
by Felix5 April 17, 2007
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