The act of anal intercourse after consuming a spicy Mexican dish. The act is considered a "true" or "proper mexican subway" if the recipient of the anal penetration has a loose stool due to the effect of said mexican food.
"Ordinarily I'd love to slip you the Liberace... but we just ate some cheap Mexican food and frankly I don't want my cock marinating in the slurry of beans and enchilada sauce you undoubtedly have boiling away in your lower intestine - I'll take a pass on the mexican subway.

or, "If Father McDaugherty thinks he's gonna give me the caboose comunion as penance for not swallowing on Lent... I'm making a run for the border so I can cook his crank with a lethal mexican subway."
by devilreyes February 21, 2007

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Top Definition
The act of inserting one's penis into the armpit of their romantic companion and thrusting it in and out. (lube recommended)
Bro 1: "Bro, the other day I gave my girlfriend a Mexican Subway."

Bro 2: "You sick fuck..."
by PLZSTFU September 30, 2011

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The act of anal intercourse after consuming a spicy Mexican dish. The act is considered a "true" or "proper mexican subway" if the recipient of the anal penetration has a loose stool due to the effect of said mexican food.
"Ordinarily I'd love to slip you the Liberace... but we just ate some cheap Mexican food and frankly I don't want my cock marinating in the slurry of beans and enchilada sauce you undoubtedly have boiling away in your lower intestine - I'll take a pass on the mexican subway.

or, "If Father McDaugherty thinks he's gonna give me the caboose comunion as penance for not swallowing on Lent... I'm making a run for the border so I can cook his crank with a lethal mexican subway."
by devilreyes February 22, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt