Assasaurus
A gay dinosaur.
The paleontologist unearthed a fossilized bone in the rectum of a dinosaur and realized he had discovered an Assasaurus
Assasaurus
A dinosaur with an abnormally large ass; also can be a name for an asshole or one who is being an asshole.
"Goddamn you are being a total assasaurus!"
assasaurus rex
A woman with an ass so big that it looks like it's own person.
Guy 1: Damn she gotta FAT ass, she got a dounk
Guy 2: Naw man that's an assasaurus rex right there
Guy 2: Naw man that's an assasaurus rex right there