rootasaurus 

An uncommonly large penis - so large that it reminds one of the dinosaurs that lived during the Mesozoic Era

This morning she backed her ass up on my rootasaurus. She said my dick was so big she felt like she had went back in time to when the dinosaurs were alive.

rootasaurus by ChickenHawk88 January 10, 2021

Bootasaurus

A name to describe someone who drinks too much and then throws up in massive amounts that seemingly could only come from a giant creature.

Tina: "Wow...our apartment is trashed. It looks like a bootasaurus was in here."

Courtney: "It was Matt's 21st bday last night..."

Bootasaurus by BootasaurusVictim March 4, 2011

Ritasaurus

The most beautiful dinosaur to ever exist. Fast, small, and very vicious. Hypnotizes prey with beautiful eyes, and attacks when least expected.

The Ritasaurus came inches away from biting my head off, but i gave it a chocolate covered strawberry and it let me LIVE!!

Ritasaurus by modaddy89 March 2, 2011

Roarasaurus 

# 1: More than just fine Roarasuarous’s are super fine!
# 2: They revive ancient into classic rad.
# 3: Confident + Cool/ Totally out-there

Example 1
Random 1: She is fine!
Random 2: Yeah doode she is a total roarasaurus

Example 2
Random 1: Roarasaurus alert~
Random 2: -looks at the Roarasaurus-
Woah she has got style!

Example 3
Random 1: That person is such a try hard
Random 2: Nargh your just jealous doode
She's a total Roarasaurus

Roarasaurus by Jia~ness December 17, 2007

rossasaurus

rossasaurus is what u call ur cunt of a friend ross when he’s being a big fat pussy

fuck you rossasaurus fucking rex

rossasaurus by abbadabbadoodiddydeeda January 25, 2020

roonosaurus 

A young female child born with little to no hair. Often mistaken for a boy.

Yes, she doesn't have much hair, she's a roonosaurus, but she will grow to be a fine young woman with a full head of hair.

roonosaurus by JoeC26 October 19, 2020

Robasaurus 

Robasaurus roams many places. He landed in a safe place in Avalon, NJ where he met other deviant people. He came across Sarahdactyl but like many other men failed and kept it moving. He kite surfs but do not go near it if you are a drunk girl because he will haunt you. He likes to chase after friends with an opened white claw when they try to leave. He has a creepy van so if he offers you candy don't go near it. After you leave your house he will stay shower and brush his teeth so be prepared. He lives his best life and if you see a man in his 30s wearing a grandpop hat that is him.

Robasaurus personally victimized Collette when she tried to touch his kite.

Robasaurus by Lindzilla September 6, 2019