Refering to an enourmous penis.
by The Real Cullen August 9, 2006
Get the Penisaurous-Rexmug. by peniswhore45 January 18, 2009
Get the penisaurous rexmug. 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
Get the Penisaurous-Rexmug.