From Demetri Martin's comedy.

A magical make-believe creature that only exists if you do not believe in it, and if you believe in it it doesn't exist.
"Hello I am a twenty one year old 120 pound virgin with c-sized breasts who does not have a boyfriend and is not crazy." -The words of a paradoxasaur.
by AggiePerspective July 11, 2008
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A creature that, if you believe in it, it exists. If you believe it doesn not exist, then it exists.
"Hello I am a twenty one year old 120 pound virgin with c-sized breasts who does not have a boyfriend and is not crazy." -The words of a paradoxasaur.
by allatropic February 8, 2007
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