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A type of "exercise" that involves you sprinting to the local taco joint for your serious case of Taco Munchies.
Man, I'm so fuckin hungry, let's do a Border Run.
by EPrime October 06, 2006
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The diarrea caused by eating large amounts of mexican food that doesn't agree with you.
"Dude what's taking him so long?"

"Too many tacos. He's got the border runs."
by Apollo Delphi February 14, 2010
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