When someone who, after reserving an OG-Mudbone amount of schpunk for an extended period of time, releases his "seed" with such ferosity that he lets out a roar of relief and the meanest, biggest load ever (basically cums a water bottle or 5). It ejaculates with speed and power, and no condom can hold it back. It is the Spermasourus Rex, the true ruler of the Animal Kingdom.
"Yo dude! How'd it go last night?"
"Man, i was a freaking Spermasaurus Rex! It was the mega load! It even tore the condom, and she just drowned in it!"
Adjective: A being in a majestic state on the Road or / and Roadside
I saw the A38man doing his thing in full flow no joke the A38man is for real Tyraodosaurus-Rex all glory to God. Peace
A meth user that has gone zombie from using too much meth for too long and who no longer needs food or sleep because they run on amphetamines and nuclear brain fuel.
The Methasaurus Rex went berserk when the drug dealer told them there were no drugs and ripped the fender off the dealer's car.
Someone who resolves most confrontation through biting
Oh god the horror, Grace just hit that kids face off when he called her a smellbag. What a T-Rex head.
When someone’s really aggressive but have nothing to back it up like the noble T-Rex’s stubby arms. Also they might bite you.
Wow did you see Grace the other day when she couldn’t win the fight she bit her, what a T-Rex head.
A disgusting, quad-legged creature 👁️🐽👁️
girl: OH GOD, WHAT THE FUCK IS THAT??
boy: don't fear, it's just a harmless Guggotorus Rex! :D