Top Definition
1. it is like a dinosaur but like a little bit crazey TO TEH MAX!!1. so youre all like "the fabled WTFASAURUS??!/."

2. an exclamation or shock or suprise.
- i thought dinosaurs were all dead.
- all accept the WTFASAURUS!.

WTFASAURUS! (that racoon just PWNED me??!/) lmaobyobabybbq

paint loller!
lolls royce
loller hockey
by Team Jack November 27, 2005
what the fuck, or what the hell
WTFasaurus are you doing?
by maddie.jerri May 28, 2008
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