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, it was a freaking Spermasaurus Rex! It was the mega load! It even tore the condom, and she just drowned in it!"
"Man, it was a freaking Spermasaurus Rex! It was the mega load! It even tore the condom, and she just drowned in it!"
by YacobEnterprizes March 11, 2014
by Walrus guy February 07, 2017
ba-donk-a-donk rex An alpha female with a bandonkadonk. Such a creature is the apex badonkadonk predator. All other thunder lizards are her prey.
by Jay Sniff December 18, 2019
by Mia parsons June 24, 2017
An annoying snatch of a wife who likes to nag about everything and blow up for no reason because she is a psycho and likes to be a whore.
by fed up man March 14, 2009
It's a Retardasaurus Rex!!!
by Marshallmates May 10, 2018
Dinosaur inspired variation of the word "noob" (meaning newbie). Used to refer to someone who is big, old and bad at achieving a particular task.
by Smogo January 01, 2016