Lmaosaur 

A rare dinosaur from the Jurassic period approximately 74680000000 years ago.
Some scientists believe the Lmaosaur survived on lolberries from the forest of rofltopia. Bones of the great arse shaped beast were uncovered in 1897 by Sven Bjorlol. Upon finding the bones of this strange and loltacular specimen, Sven had a colossal fit of laughter which resonated from his buttocks. When he had been loling for over 3 days, his anus and surrounding buttcheeks fell from the rest of his body and he died from Roflmaogitis. When his friend Friedrick Von Apelike-rofl found his body he yelled "LMAO!"
Thus, the newly discovered dinosaur came to be known as the Lmaosaur.

The Lmaosaur was feared by other dinosaurs for its spectacular Lmao-attack which left its enemies arseless.

Lmaosaur by Mutilatedzombiecarcass July 24, 2009

Lolosaurus Rex 

A larger, more stupid species of the lolozaur family, known for its haunting, beastly cry between other lolosauruses; LOLOLOLOLOLOLOLOLOL

Man 1: "What in the fuck is that?"

Paleontologist: "Oh shit, lolosaurus Rex!"

Lolosaurus Rex: "LOLOLOLOLOLOLOL"

Lolosaurus Rex by Perry H. Christ September 27, 2008

lolosaurus 

Greater than LOL, ROFL, LMAO, LMFAO and ROFFLES, Lolosaurus is perhaps the greatest e-way of saying "I find that funny and would wish to say so in a gradiose fashion" however if it were to ever be translated into a laugh it would kill the laugher.

Billy:*rolls eyes*
Timmy: That's what your mom did last night!
Billy:STFU!
Timmy: Lolosaurus!

lolosaurus by Jeans May 31, 2005

Lameosaurus Rex 

When someone acts extremely lame. Where someone is really lame and it's sillier than a regular dinosaur on their silliest behaviour, resembling a "T-Rex".

Dude bro, you're so lameosaurus rex... that joke wasn't even funny.

Lameosaurus Rex by JPizza January 19, 2008

lagosaurus 

an all knowing greek boy who thinks that he is the last dinosaur alive and lives in a jungle amongst primates.

Its a bird, its a plane, ITS A LAGOSAURUS! Where is my shot gun?

lagosaurus by Crystal McNeely December 1, 2006

Lenosaurus 

When a girl has a huge chin, the size of Jay Leno's

Damn loook at that Lenosaurus!!! (to a girl with a huge chin ex. vienna from the bachelor)

Lenosaurus by ilovedinos March 2, 2010

Litosaurus 

A person who instantly falls asleep in cars parked in random driveways. May occasionally spill cups of ice water on themselves due to falling asleep.

There was a litosaurus in my front yard again this morning.

Litosaurus by Da hyena August 30, 2016