see Jessie Ventura.
"Bunch a slackjawed faggots around here. This stuff will make you a goddamned Sexual Tyrannosaurus, just like me."
by Bythorsbeard February 10, 2005
A man with a voracious sexual appetite which knows no bounds. Often a Sexual Tyrannosaurus uses forceful and overt tactics to attract/trap a mate including but not limited to: chest thumping, bellowing, hip thrusting, and laser sex eyes.
"dude. once tanner got a couple drinks into him he morphed into a terrifying sexual tyrannosaurus! he was unstoppable!"
by Tanner Throb February 05, 2010