Sex-act performed on any gender.

The Hiroshima is performed on either gender and most easily done in the doggy style. While your partner is exposed and vulnerable, you unveil extreme inhumane cruelty by dunking a bottle of Tabasco Sauce into her undefended anus.
"My ex told me to surprise her so I did the Hiroshima on her. Can I bunk with you tonight, bro?"

"The Hiroshima was exactly what I needed to fall in love with my boyfriend again! It really spiced up our sex life!"
by Chong Zhee November 9, 2018
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Ok,When you jizz in this hot bitches mouth and then say "Baby there's more so close your eyes" and then you ram your fist down her throat so semen splashes everywhere and then you have yourself a hiroshima.
*Note*:Fabro is not responsible for any accidents that occur during this awesome form of Bukkake.
Fabro:Close your eyes baby
Girl:Ok but no Hiroshima's
Fabro:Ok...(Rams Fist Down Throat)
Girl:You ASSHOLE!!!
Fabro:Holy Crap Your a MAN!!!
by Fabro May 10, 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 you are in a porta pottie and are taking a huge shit, a shit so large it is almost of equivalent size and nature to the bomb dropped on Hiroshima. Suddenly, you get the urge to jack off or have sloppy butt sex with a random person. Because the lotion is so far away, you scoop out some shit from the toilet and use that as lubricant.
1. One time John went into the porta pottie after Kyle did the Sloppy Hiroshima to his girlfriend...he is currently in therapy.

2.

Cameron:dude I gotta take a shit, where's the porta pottie?

Matt: It's over there but I wouldn't use it, last night Fernando got drunk and did a sloppy hiroshima in there.

Cameron: Dude, fuck him.
by Thatfatguydatdadrunkgirlshooku September 2, 2012
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For one to blow there ass out so loud it causes similar noises to Hiroshima, the pungent odor with fill the room causing all that smelt it to have there eyes water.
I think Lenny is causing Hiroshima in the bathroom, I can hear and smell it from here, as a matter of fact my eyes burn.
by The Zohan December 2, 2019
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When your taking a shit and it sprays everywhere. A less offensive alternative to "anal holocaust". See anal holocaust.
That poor bastard who walked into the men's room nearly asphyxiated from the horrific smell of my anal hiroshima.
by M. Ward August 26, 2005
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When you take an absolute gargantuan steamy hot watery shit (hopefully in a toilet), that typically is caused after eating Taco Bell, (and other Mexican food), this shit will be a traumatizing memory that you will live with forever.

It's called Hiroshima because this hot dihorrieah mess of a recked asshole, this massive Chernobyl explosion shit, this nuclear explosion bomb off a fart shit, should just destroy all living bacterias inside the toilet bowl, sometimes even going outside of it.

When this absolute honker of a shit erupts out of your now shredded asshole, like an atomic bomb, like a volcano, like a godly blast of extreme shit, it will destroy anything in its path, don't expect a clean butt after this, expect to have the dirtiest, shittiest, shower of your life, nothing else will get rid of it. You will smell horrible for the rest of the week, don't even try leaving your house.
Guy 1: Oh shit I think I have to go Hiroshima the toilet!

Guy 2: Fuck, call the plumbers.

Guy 3: Goddammit Taco Bell wasn't a good idea.
by KyrenShat March 14, 2022
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