Peenasaurus 

Noun

Peenasaurus comes from the root Peen meaning penis and saurus which lends to large things such as a dinosaur. A Peenasaurus is a man with a large penis.

He's not a guy... he's a Peenasaurus!

Peenasaurus by kwt52 March 2, 2010

plebasaurus rex 

A low life, low social economic, loser of a dinosaur who is often picked on by the upper class of dinosaurs like the T-Rex

The plebasaurus Rex would go hungry for another day as he was broke

plebasaurus rex by Y0shimtea December 21, 2014

Pregnasaurus 

A large lumbering animal with an extended stomach and a lifespan of about nine months. Animal is prone to ligament pain, especially as it reaches maturity. Know for uncontrollable mood swings, strange eating habits, and a cooing noise made when near children's clothing.

The pack of pregnasaurus waddled into the baby section of the department store and began making strange cooing noises. Spectators were amazed by the gentle nature of the pregnasaurus until one became ferocious with hunger and proceeded to hunt and devour a candy bar.

Pregnasaurus by Pregnasaur July 30, 2009

Pownasaurus 

Typically a 12 year-old boy, whose balls have no quite dropped yet. Playing COD or Halo, screaming at the top of his squeaky annoying voice whenever he feels he has accomplished something of importance. Not to be confused with the Pownasaurus-Rex . A middle-aged balding version of the pre-teen Pownasaurus. Who, despite the dropping of balls, still sucks at life.

"AHHH DOOOD! I am totally like the POWNASAURUS right now! I definately just jumped into that vehicle, damn right, POWNASAURUS on the prowl!!!"
"Man...STFU you squeaky voiced beeeyyotch!"

Pownasaurus by Fowlerz March 16, 2009

plebasaurus 

A prehistoric dinosaur that was from a low social class of Dinosaurs

Wow you are such a plebasaurus

plebasaurus by Yoshimite November 1, 2014

pregasaurus 

1: A pregasaurus is a pregnant woman that that will destroy anything thats in the way of her and her food.

2: a pregnant lady that will eat anything, its a omnivore (eats plants and meat)

1; Quick everybody hide there's a pregasaurus coming and shes on a war path.

2; jason: hey man who's chocolate is this

brett: i wouldn't touch that it belongs to a pregasaurus

jason: oh shit that was close man that could have been my

last meal

brett: yeah man them pregasurus are vicious creatures

pregasaurus by pregasurus hunter October 12, 2011

Penisaurus Erectis

A large penis that is big, erect, and terribly ugly

Jessica: "Carol,I was up early this morning and unfortunately saw Sam sneaking out of your bed with a penisaurus erectis. How can you use that thing, it is horrid!"

Carol: "I know, but once it's dark and I'm a little drunk, who cares?"

Penisaurus Erectis by Dastev April 13, 2009