Megosaurus 

A girl in my class who resembles a stegosaurus, you know, fat, ugly, and has a huge loose vagina.

I just saw a Megosaurus, i almost cried.

Megosaurus by peter stednik June 10, 2004

megasaurass 

A homosexual dinosaur.

That male dinosaur is fucking another male dinosaur, the one on the bottom is megasaurass.

megasaurass by jimbocan February 10, 2008

Morosaurus

A semi aquatic monster/dinosaur that comes out and beats kids with anything available. If it be a pole or a canoe paddle, no one is safe. A morosaurus is very protective of his turf and will defend it at any cost. If you ever run across a morosaurus, the only way to escape is to yell "You won't" or "Square Up" as loud as you can. He will see it as a very offensive act and will scurry off into the wilderness.

That creature looked alot like a morosaurus!

Morosaurus by Coolman421 August 19, 2015

megasaurass 

a homo dinasaur

i bet that guy owns a megasaurass

megasaurass by taoboi March 18, 2009

meosaurus 

(n). A loud, obnoxious, self-absorbed person that dominates a social situation and won't stop talking about themselves. A narcissist that gobbles up all of the attention and conversation from the group.

Man I was trying to talk to this hottie but some damn frat boy meosaurus kept shouting about his recent promotion and new Mercedes.

meosaurus by JDP123 March 5, 2011

MelonSaurus 

A Melonsaurus is an animal that is a cross between a dinosair, and a Melon. They are rarely seen, and usually are seen firin their lazers, and destroyin stuff. The most common Melonsaurus is the Milin, that can only be seen in Pensylvania.

Damn, my MelonSaurus got out and destroyed half of Tampa!

MelonSaurus by Rdawg00014 September 3, 2010

manosaurus

A woman(even though it is MANosaurus) who is a combonation of a Woman, Dinosaur, & a Hippopatomus. They usually just look like fat messes, and if you ever catch someone glancing at her, you will witness a face of horror. There are rumors that if you get to close to the Manosaurus's babies, the Manosaurus makes you sit with kids and play with scooby doo cards. BUT.. there have been rumors to the rumor, that they have upgraded to normal playing cards because they realized they couldn't get any of that fine pussy jerking off to scooby doo cards.

Person1: Oh shit, there's a manosaurus walking through our lunch room.
Person2: My dear god..
Person3(in the background): Izabel stop sandbagging me. Ya Dig?

manosaurus by Jesus Christ Jr. II April 3, 2008