Top Definition
when your fisting someone, whether anal or vaginal, and open your hand like an explosion while your hand is inside them.
chick#1 "Jim gave me a Mexican Hand grenade last night."

chick#2 "really, and how was that?"

chick#1 "interestingly fun."
by Mexican with Hand grenades November 27, 2009

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when one craps in their hand and throws it at a group of people
I could be wrong, but i think that kid is preparing to throw a mexican hand grenade at us.
by freshdreads April 30, 2010

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When you take a dump into a sock and then throw the sock at a person like a grenade. Usually done after consuming lots of spicy food. Not to be confused with the Mexican Mortar.
Monty ate a lot of Taco Bell today so he decided it was an opportune time to throw a Mexican Hand Grenade at Shane.
by Jameson Vandersnatch September 04, 2011

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.

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The Urban Dictionary Mug

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

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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