Flakasaurus rex 

n. (flake-a-sore-us-rex) a. Someone who is unreliable and never does what they say they are going to do.
b. The biggest flake you know.

Tim: Hey, John, I thought you said you were coming.

John: No, dude, I have to wash my dog.

Tim: You're such a flakasaurus rex.

Flakasaurus rex by -Angel- July 16, 2011

Fagasaurus Rex 

one who is such a big fag, the only thing large enough to compare their gayness to is a dinosaur.

Quit touching my leg Fagasaurus Rex.

Fagasaurus Rex by friedchicken347 July 3, 2010

Fuckasaurus Rex 

An elderly individual who is highly sexually active

"I hear Quincy down in hall A of the Happy Homecomings retirement home is a fuckasaurus rex!"
"o rly?!"

Fuckasaurus Rex by Phantomman December 21, 2005

Flefasaurus Rex 

A Flefasaurus Rex Is A Preistoric Animal That Lived Over 70 Million Years Ago! Unfortunatley They Were Hunted To Extinction By It's Main Predator, The Worm!

Unfortunatley, Due To The Flefasaurus Rex's Small Size, Inability To Run, Lack Of Muscular Strength, Inability To Fly, Unable To Defend Itself And Just Being Downright Retarded! The Flefasaurus Rex Was Hunted And Killed By An Animal That Was At The Bottom Of The Food Chain.

1) "Jerry, quick! Over here, I found something!"

"What is it Dave? This better be good!"

"I think I found a fossil"

"Whoah! that's a Flefasaurus Rex! The rarest creature of all!"

2) You're such a Flefasaurus Rex! (Meaning, stupid or retarded)

Flefasaurus Rex by SuperMike455 August 1, 2012

Fagasaurus Rex 

King of the Gay Lizards!

Brian's motto was "Semper Fagasaurus Rex".

Fagasaurus Rex by BobDobbsIsYourGod January 12, 2008

fatasaurus-rex 

A word spaning from my own brothers mouth, that i used in reference to Sascha at Roswell's Home Coming Dance

Sascha: I'm ditching you for Chantal
Me: Good I wouldn't want to go out with a fatasaurus-rex anyway...

fatasaurus-rex by George Hoefer March 7, 2005

Fagasaurus Rex 

Leader of the pack of any given group of Gaybo Watsons. The Fagasaurus Rex is usally the flamer, and prefers to wear thick makeup and lots of bright red lipstick. His clothing usually consists of high heels and his ex-wife's wedding dress. He tends to be super gay, and lets anyone and everyone know it.

"Oh my god, look at that Fagasaurus Rex! Hey--wait a minute. Holy shit, that's Chip the wrestler from high school. Didn't you guys used to ride to school together? Are you sure you're not a Gaybo Watson?"

Fagasaurus Rex by Scotty Smith November 19, 2007