1 definition by dwaiky

Top Definition
A subspecies of the Tyrannosaurus Rex that has successfully repopulated the world today. The Y. Rex is prone to sudden random dinosaur-induced outbursts and often struggles to extend its arms with a ritualistic arm dance to increase the efficiency at which it captures its prey.
Dayumm, look at that yorkasaurus rex's pro fishin skillz!
by dwaiky December 02, 2009

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