Top Definition
A phrase coined by comedian Johnny Sanchez, relating to an older man of Mexican heritage who, during the process of aging, developed a stomach so large his arms seems to shrink in comparison, making him akin to a tyrannosaurus rex.

The term came to fruition through Sanchez noticing how as Mexican men age, they tend to morph into the description of Tyrannosaurus Mex with larger stomachs and seemingly smaller arms.
Johnny - Look at that guy! Look at that gut!
Bobby - Yeah! And his tiny arms! He's totally a tyrannosaurus mex.
作者 wedidn'tstarttheflamewar 2009年9月19日

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A Dinosaur From Mexico Who Spends His Nights Ordering Taco Bell. One Can Identify A Tyrannosaurus Mex By His Skinny Jeans And Large Floppy Hat.
Guy 1: Hey Look At That Dinosaur
Guy 2: You Mean That Tyrannosaurus Rex?
Guy 1: No Can't You See The Sombrero?
Guy 2: Oh I see Its A Tyrannosaurus Mex
作者 Snicklefritz9 2012年11月23日

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