Spouse or signifgent other that alwaysnags about anything you do or attempt to do.
Person:" I think I would like to watch the game today."
Nagasaurus: "Yea just like every other day, we never do anything any more . We haven't visited my mother in ,I don't know how long." Yadda Yadda Yadda.
A dinosaur that's black as fuck, like a nigger Dino. It's also known as someone who's acting like a big black nigger Dino. It also adds a 2x multiplier to the person society as a wigger.
YoJoshua, pop that guy acting too much of a lil Niggasaurus-Rex?!