dumpasaurus rex 

a tremendous dump, so large that it literally roars forth from your asshole and fills the entire bowl.

Get the fuck out of my way Charlie, I have to take a dumpasaurus rex!

dumpasaurus rex by teabagg bandit May 14, 2005

Derpasaurus Rex 

A name coined for the dinosaur that appears at the end of the stage 'Dino Dino Jungle' in Gamecube's "Mario Kart: Double Dash!" The Derpasaurus sticks his face across the bridge as you are karting across.

Player 1: "dude, the derpasaurus rex knocked me off of the bridge!!! "

Player 2: "figures broski, he's crosseyed"

Derpasaurus Rex by Broviet Russia May 18, 2011

Humpasaurus Rex 

Your significant other with whom boom boom is made.

Hey my little Humpasaurus Rex, wanna go roll under the covers for a bit?

Humpasaurus Rex by frankyt June 10, 2010

gumpasaurus rex 

the words gump and tyrannosaurus rex put together. to be gumpy means to look stupid or really goofy or lame. a tyrannosaurus rex is the gumpiest dinosaur ever. so when you call someone a gumpasaurus rex you are saying that they are far beyond being gumpy.

mike: look at josh over there, hes such a weirdo.
sam: wow he looks really goofy, call him over here.
mike: hey you, gumpasaurus rex, come over here!

gumpasaurus rex by aimeeleetradmark May 9, 2008

Dumpasaurusrexx 

When you take a dump so big you make a T-Rex noise.

God dude that was a big Dumpasaurusrexx

Dumpasaurusrexx by The Issued man August 23, 2016