Metrosaurus 

An incredibly crass looking individual (also gives the impression of a sleep deprived swan) who prides themselves on dressing metrosexually to cover the fact that they are, infact, just the bastion fuck ugliness.

if he was any uglier, i would slap that metrosaurus...

Metrosaurus by Karl Lucien September 16, 2007

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

Methasaurus Rex 

term given to sketchy meth-heads in or around a city

Its about 10 til, we are driving to Carl's Jr. And we see a Methasaurus Rex, barefooted as fuck! Welcome to Redding, CA.

Methasaurus Rex by ericd000e August 31, 2010

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

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

MAVROSAURUS 

a herbivore from the information age that is compelled to voice its opinion, whether right or wrong, whenever someone is willing to listen, and even when most are not. mavrosaurus is destined to become extinct due to its inability to adapt to real life situations like inserting information into a database. a voracious hippocrit, mavrosaurus never puts in a full day's work, and typically sneaks out within two minutes of the boss's departure. mavrosaurus is quite nervous, and never misses an opportunity to rub its claws together, then throw its arms up and snarl its highly recognizable "PFFFT"

Nobody likes a mavrosaurus.

MAVROSAURUS by satan September 30, 2003

Memosaurus 

A meomosaurus is either an in your face freaking crazy person who is obsessed with memes ad nauseum. Or a more friendlier description involves a quirky meme obsessed person who you can forgive for been obnoxiousnessly meme obsessed because theyre really hot and of the preferred sex.

Dam that lady sure is cute, shame shes such a creampuffin memosaurus!

Memosaurus by awakekiwi June 28, 2016