to let a fart while getting a blow job from a Japanese chick.
That sushi waitress didn't appreciate it when I gave her the Hiroshima. I hope she doesn't get pink eye.
by Big Droz June 24, 2009

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Placing a weed filled blunt into a bowl and packing more weed in around the blunt. The blunt hits fat through the bong and then when it gets to the packed bowl its as if a bomb has dropped. You will get sooooooooo blown
Let's go buy a blunt and bomb Hiroshima after school.
by 024subminylf September 17, 2009

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Whether you're watching a movie, talking to your boss, flirting with a pretty girl, or listening to your teacher, some asshole standing next to you will rip a massive fart that abruptly interrupts whatever is happening. Everyone will stop what they are doing and look at you in disgust. This colossal fart is known as "Hiroshima".
Boss: ...and so our branch is getting budget cuts, meaning you'll have to-*HIROSHIMA*

-awkward silence as people stare at you-

Boss: ...As I was saying, the tough economy means that I-*HIROSHIMA*... am firing *points to you* you because we are being forced to lay off non-essential staff. You are no longer required.
by Brawldud December 04, 2011

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One of the two places on earth where WMDs were ACTUALLY used.
The atomic Bomb was dropped on Hiroshime and Nagasaki. this is the only time in the history of war that a weapon of MASS DESTRUCTION was actually used. Think you f$cking americans.
by Totally_OSM! May 18, 2005

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Jailbait or the act of engaging in sexual acts with jailbait.

The term has gained popularity due to Suga Fist's hit single by the same name.
Who got that Hiroshima? It could be your baby sister.
by DigitalD April 20, 2006

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A gravity bong. Easily made using a two litre bottle and a bucket filled with water. You put a bowl in the top of the bottle and cut off the bottom of the two litre bottle. Then, you submerge the bottle in the water until the bowl is the only piece of the bottle that is not submerged in water. As you burn the marijuana you pull up the two litre bottle until it is filled with the sweet, sweet marijuana smoke. When the bottle is filled it should be a dark grey color because the smoke will be so thick. Next you take the bowl out, put your mouth over the bottle opening, and push the bottle down, thus quickly filling your lungs with a massive toke. If you do Hiroshimas correctly, it will only take a few hits to fuck you up.
Me and Jamal got fucked up after two Hiroshimas each.
by Cobert December 25, 2005

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When without warning you get the immediate urge to take a shit, running to the bathroom you start to unbutton your pants, and right as you make it to the toilet it explodes out of your ass and it is all over in a matter of seconds.
Brent: "You ready to get on some halo?"
Mike : "Ah hell, I gotta go drop a deuce"

Less than 30 seconds later...

Brent: "That was the quickest shit ever!"
Mike : "I know, I Hiroshima'd it"
by Who? Mike James March 07, 2007

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