A Prehistoric Donkey (4-legged hoofed animal) from the southwest or south of the border. Fossilized Remains of it were discovered by archaeologists at or near the La Brea Tar Pits.
On wikipedia. Type in the following key words: "La Brea Tar Pits" Scroll down Until you see a list of all of the prehistoric animals including the "Mexican Ass," that archaeologists found the remains of.
by Aaron Ferber October 13, 2007
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When your ass crack gets all slimy, sweaty and stinky because you didn't wipe good enough.
I took a shit this morning and went to the gym. Now I need to wipe because I have Mexican Ass.
by L G Miller April 26, 2007
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A good old fashion Mexican Ass Gasket is when the stall you happen to be going #2 in is out of Ass Gaskets so you have to use the rim of your sombrero (by tearing off the top) as an Ass Gasket.
Ignacio in an act of desperation used his sombrero as a Mexican Ass Gasket in the toilet stall.
by Zodaxyz August 9, 2018
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Initial steady stream of shit disbursed through the anus ( usually accompanying sever anal burning) whilst on the toilet after a hefty meal of Mexican food.
"I was so sick after I ate five tacos at that Mexican restaurant, talk about a Mexican Ass Fountain!
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When you put a burrito on your dick and proceed to fucking somebody in the ass-hole.
Oh man, I gave her a Mexican Ass-mash last night, and when I was finished, her ass-hole was deep, dark purple. It was awesome!
by liamisawesome1111 October 2, 2015
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1. (n.) An irresistibly gorgeous latino.

2. (n.) A dude that takes your breath away when a half-cocked smile graces his luscious lips a.k.a. a 'Pac Moment'.

3. (n.) Joe from Texas.
1. "I met this FINE ASS MEXICAN GUY in the parking lot and DAMN i had a 'Pac-Moment' cuzz he took my breath away.... "
2. "I met Joe from Texas & he so hot that I was stupefied. I tripped over my stilettos tryina give him my digits!"
by thaREAL-ESTone November 8, 2020
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