Tucking your upper lip under itself, making you look like a "dinosaur". Usually accompanied with screeching noises, roaring, or squawking. Like a dinosaur.

Try it!
Damn, that girl's dinosaur face is so hot. I love when people don't have upper lips.
by Sexy_dinosaur_chick August 09, 2013
Top Definition
Verb: when inside a car you scream like a dinosaur at pedestrians or cars.
hey you wanna dinosaur face this old lady.
by Marino K August 30, 2006
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