A girl or guy who has been a slut for a long time. They tend to be bad company and like to steal your socks and hang them in trees.
by AwesomeDaveRules November 1, 2008
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A dino loving kid from converse indiana...
he's a huge flirt, who can't get enough girls, even when he has an amazing hot girlfriend jacki!!!

while he is nice, sweet, HOT, emo, & just plain awesome he is also insecure and leads girls on alot...

so.. A trent-a-sourous is that hot a-hole guy that will give you a great time, make you laugh & feel special, but after he's satisfied he cuts you off... and moves on.. for more prey.. or just goes off with his girlfriend... therefore he is like a dinosour stalking prey.. making him a trentasourus!
This guy was being such a trent-a-sourus sure we had a great time together at the show.. but when he left he left with another girl, & i called him but his girlfriend answered.. i hate assholes like that.. what a trentasourus!...
by that bitch... March 23, 2006
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Slang for penis! Aslo used as a pick up line!! You want to see what my cock-wil-do-to-you!!
My cock-a-sourus rex will finish your kind off without a meteor !
by Birdie1028 June 5, 2017
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A kid who is less then pleasant to be around.
Tommy is being a Grouch-a-sourus today.
by Kla31 July 30, 2022
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