A species of dinosaur that prefers to take it in the ass.
Look at he gaping hole on the megasoreass.
by harry January 21, 2003
a male dinosour that ingages in sexual acts with other male dinosours.
if that guy was a dinosour he'd be a mega-sore-ass
by Shane Bru July 05, 2007
A gay dinosaur.
"What do you call a gay dinosaur"? "A mega sore ass".
by Richie Pimental February 10, 2009