Top definition
Any person, male or female, with a penis that is better measured in metric tons than inches.

Also see "Zoah"
That guy I went home from the bar with last night was a real Cockasaurus. He tore my taint in half and now I'm shitting out of my box.
by Zarr January 20, 2004
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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
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2
A man with a very large penis almost the size of the Willis Tower, could be called Big Willie.
by Cockstain23 December 10, 2009
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3
A hugggggeeee penis, like realllyyyy big
"she wanted some of my cockasaurus"
by G Dub April 10, 2007
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4
A massive, omniverous, mean, but not agressive unless threatened by anything, dinosaur that comes in a varieties of colors and three different sizes. There are mini cockasauruses, flying cockasauruses, and normal cockasauruses.
There are 91 cockasaurus eggs in the air conditioning unit.
by cockasaurus man March 19, 2008
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5
Very huge cock,described big like a dinosaur
"Brad showed me his cockasaurus"
"Bro she couldn't handle the cockasaurus"
by Plemington_J August 27, 2013
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