When a male sticks a fire cracker into his urethra and lights it prior to putting his penis into a females vagina, resulting in the explosion of the fire cracker in the vagina.
Dude, my dick is destroyed after I did the Japanese hand grenade on my girlfriend
by Poner la mesa March 11, 2010
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The preferred weapon of God, set to exploded after 3 seconds (not 4, nor 2, 5 is way out), and always kills the target.
by Extreme June 19, 2004
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The act of, when out with friends and having a particularly engaging conversation, coming out with a completely inane or otherwise offensive/distasteful/unfunny comment that is so heinous it kills the conversation dead.
Friend 1: "Aww man that's so funny..."
Friend 2: "Yeah, tonight's been really cool."
You: "Hey, aren't spastics funny!?"
All: <silence>
by Barlos the Jackal November 25, 2003
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Hand grenade pussy is pussy that looks and/or feels like someone let a hand grenade off in that bitch.
"Was that one girl's pussy good?"

"Hell no, man that bitch had some hand grenade pussy!"
by The Infamous Tito March 9, 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 4, 2011
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Your having sex and you really need to shit, but you dont wanna stop banging her, so u shit in ur hand and slap her in the face.
While haveing sex, Paul really needed to shit so he whiped out the shity hand grenade on the bitch.
by gilli-spree March 9, 2007
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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 28, 2009
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