dinosaur your mom 

1. (v) vicious sex act performed by decimating a nasty chick's asshole prior to bringing your wrists up to your chest mimicking a tyrannosaurus, roaring at the full capacity of your lungs and stomping the shit out of your victim, violently demonstrating the hunter's superior might over the powerless prey.
<note: it is not required that this is done to someone's mother, any female can be dinosaur your momed>
2. (adj) used to describe the astounding engine protecting qualities of Mobil 1 Extended Performance motor oil.

1. Jamie is such a slut, I dinosaur your momed her last night and she called me back!
2. ....and then there's this dinosaur your mom kind that goes for 15,000 miles!

dinosaur your mom by squirrel March 18, 2005