Refering to an enourmous penis.
by The Real Cullen August 9, 2006
"that collin has a penisaurous rex."
by peniswhore45 January 18, 2009
The dinosaur that all people love (especially girls that want to fuck with him) it is very recognized for his big, giant dick
by XX-DOGEBITCH-WOOf February 5, 2018