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

assasaurus rex by kdakid May 26, 2009

awkasaurus rex

General manly behaviour that is so awkward even dinosaurs would sideways cat you for behaving this way.

In other words like awkward turtle.. But manlier.

Guy: Check out his dance moves, so awks
brohemo: he's doing the awkasaurus rex
random lady: ain't nobody got time for that

awkasaurus rex by chaboisamye November 30, 2015

aggasaurus rex 

the form of being agger than agg, ultimate agg, an agg dinorsaur, also look at agg

Man did you see john do that run through? He's an aggasaurus rex!

aggasaurus rex by Davo Kanavo February 12, 2007