Top Definition
A term used when "wtf," "watafa" or any variants on "What the fuck?" just DON'T apply.

Implies that your confusion to whatever has been said/done is gargantuan, like the dinosaurs.

Essentially the "wtf" version of "lollerskates," "roflcopter" and the rest.
Dad: Son...I have something to tell you. Your dog is your biological father, and I am just the she-male that video taped and occasionally participated in the night you were concieved.

Son: Watafasaurus.
by Wingman, 1st Degree August 12, 2006

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