dinosaur face 

Verb: when inside a car you scream like a dinosaur at pedestrians or cars.

hey you wanna dinosaur face this old lady.

dinosaur face by Marino K August 30, 2006

Dinosaur face 

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.

Dinosaur face by Sexy_dinosaur_chick September 8, 2013