Top Definition
a rare species of dinosaur that magically warps forward in time when someone wins at life. this causes all believers of the magical powers of the winasaur to exclaim loudly WINASAURUS REX! followed by high fives and fist bumps galore.
<Jon gets the coin to go down the girls cleavage, winasaurus rex appears> "WINASAURUS REX" <Jon high fives and fist bumps all surrounding people>
by winasaurlover February 22, 2010

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