(1) King, or the (2)dominator.
(i.e. 1- Just as the tyrannosaurus Rex is the dominator or king of all other dinosaurs and rex's whoever he wants. (i.e. 2- Just as you may have rexed your buddy in a game of Ping Pong.
(i.e. 3- You may want to Rex that chick who's V-card is dangeling infront of your jock.
by Blake Romine January 21, 2004
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The main protagonist of Xenoblade Chronicles 2. Your typical dumb, oblivious dork that shouts cringey battle cries and manages to get all of the girls without realizing he’s gotten all of the girls.
Nia: I love you, Rex.
Rex: I love you… AND ALL OF YOU GUYS!
by goshdangitmark March 2, 2022
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A unit of measurement used to define length, weight, power pressure, and currency. These measurements include MicroRex, CentiRex, KiloRex, DeciRex, MilliRex, MegaRex, GigaRex, TerraRex, DecaRex, MacroRex and Rex.

The numerical values for all means of measurement are based on the T Rex. Jaw Pressure, height, width, length, mass, and BTU's are all defined by those directly equivalent to that of a T Rex.
Feet no longer exist, except for the ones at the end of your legs. All previous values of measurement have been eliminated. Making way for the universal Rex. Feet, meters, joules, pressure, miles, grams, liters, gallons, inches, watts, all of it is now a Rex
by Eurocat March 9, 2011
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A human being who is a true poon slayer. You cannot or will not get on his level for if you do then he will choke slam you back down to the lower levels.
Daniel-Get on Rex's level!
Josh- I can't thats impossible......
by Tyler from Memphis December 9, 2011
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One of the smartest boys in the world

Any one would be lucky to be his friend
Harrison: Did you hear that Mylee was dating Rex
Dufus: Ma’am she’s got to be the luckiest person in the world

Jack: Can I be his Friend

Harrison: No

Jack: FUCK YOU MOTHERFUCKIN’ Dickhead can I at least talk to him

Harrison: No
by Imposter 181 February 4, 2022
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rex is an awesome person. if you ever get to be his girlfriend or his friend, you’re a lucky person because rex will be there for you at all times, always checks up on you and makes sure your happy all the time. he can make people laugh easier. rex is funny, caring, smart, playful, chill, etc ! rex is always gonna be there for you no matter what happens !! through, rex likes to do pranks and sometimes people would get a little over sensitive, it’s okay because rex was just joking around ! remember, if you ever meet a rex, keep him !! don’t lose him because you’ll end up missing him and regretting it later on it life !.
autumn : is that your boyfriend , rex ?
bella : yes !! he’s so sweet and caring.
autumn : wow, we need more boys in the world like that.!
by ew.its.taylnn April 22, 2019
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n.-a massive shlong.
n.-one who possesses massive shlong.
n.-one who easily attracts play; one sexy mother fucker.
v.-to sex up; hump; get it on; inseminate.
v.-to attract little boys.
by j.a.s. jr. November 22, 2005
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