Top Definition
When a woman's vagina is so big and loose from fucking people a lot that it could almost eat someone.
Damn dude! I was gonna fuck her and I was like, "Woah! Cuntasaurus Rex get the hell away from me"
by The Sheep September 08, 2004

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Bitch from hell. Relentless shrew.
"We could be happy if your mother wasn't such a cuntasaurus rex!"
by Toni Seville April 16, 2006

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A woman who is so evil that if she existed during the time of the dinosaur, she would have survived extinction through sheer hatred for anything that might live.
My boss is an evil souless cuntasaurus rex
by daonocto August 18, 2010

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Cuntasaurus Rex is by far the queen of the cunt bitches who reigns supreme. She can not be talked to with reason due to to her superior cuntness. She also may be of beautiful physical nature but the permanent cunt look On her face tells her true identity.
Man that bitch is smokin hot ,but i heard she's a real Cuntasaurus Rex
by Flatside69 January 10, 2012

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A very bitchy person, good to use for a laugh, or to make fun of someone, and not get in trouble, because technically, it doesn't exist. Also, a Dinosaur living in your mothers vagina. If it's not pink, he/she (GOD I HOPE ITS A SHE) will eat the human.
Austin Bowes. 'Nuff said.
"GOD! WHY DO YOU HAVE TO BE A CUNTASAURUS REX?!"

"RAW RAW RAW RAW RAW RAW RAW!" "STOP BEING A CUNTASAURUS REX AND SAY SOMETHING ELSE!"
by John Johnston/ Artemis Flame January 03, 2009

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A large and or scary looking woman who is rude, or "cunt-like" in nature
Yeah, she is pretty much a cuntasaurus rex for saying that to him.

That girl mean! Like a cuntasaurus rex
by npizzle March 09, 2009

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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When a woman is being overly cunt-y. Usually the few days premenstrual.
Woman: "Don't even go there with me"
Other: "Ew, you're being a Cuntasaurus Rex right now".
by Ltotheizzay March 04, 2009

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

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