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

Fuckasaurus rex 

An absolute unit they often participate in orgy's and large sex circles they can often take women and men not gay tho |; they also must be older than 60 to be a prehistoric fuckasaurus rex

Hot girl: I see that guy absolutely slay those seven girls
Gay friend: yes I'd call him daddy

The fuckasaurus rex: thank you friend

Fuckasaurus rex by Cumbobulator March 18, 2021

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

suckasaurus-rex 

a situation or person that really, really sucks.

You failed at life? Suckasaurus-rex!
Your boyfriend dumped you - what a suckasaurus-rex!
You wiped out my hard drive? you are such a suckasaurus rex!

suckasaurus-rex by Joyful, Joyful January 10, 2008

Fuckosaurus Rexxx 

When a guy's Herculean penis is so huge you fear for the safety of your vagina

I screeched like a ptylerdactyl when I saw his Fuckosaurus Rexxx.

I

Fuckosaurus Rexxx by fuckgurlnumbr9 March 3, 2015