The sexual act when a male urinates in a female's anus and she in return flatulates, expelling the urine in a blast similar to the geyser of the American West

When expelled with less force or with a different liquid, see water fountain
"Katie shot me in the face with her geyser yesterday."
by The Big Man011 October 22, 2006

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Top Definition
A broad who squirts her juice into the air upon climax
Jessica gave me a geyser last night; I was drenched!
by MOCO & P-Phat May 27, 2007

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1) Noun: A spring characterized by intermittent discharge of water ejected turbulently and accompanied by a vapour phase (steam). Wikipedia.com

2) Verb: A method used to get drunk fast, while remaining classy: Pour a large amount of hard alcohol into a cup, Grab cup with right hand and your bottle/can/container of chaser with your left. Chug the alcohol in the cup, immediately pour the chaser into the cup and chug that. slang
Ew that girl just took a handle pull and she has herpes. I was going to take a handle pull, but now I will geyser it.
by thefunkySmonkey May 12, 2013

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The skin around your butthole. The geyser is to the butthole what the areola is to the nipple.
I havent showered in a week my geyser is itchy.
by Gabey baby April 06, 2014

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A bloke who's a bit hard and thinks he's the dogs bollox.
That geyser just pinched my birds arse.
by B January 22, 2004

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someone who drinks excessively and then ejects a column of vomit into the air
Dude...did you see that Candace chick that puked all over the bar on her 21st birthday?

Yeah, she got kicked out for being a geyser.
by Your Mom May 09, 2004

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the head of the penis is slipped into a hole of a loose woven afghan or quilt, and you masterbate, resulting in your come to shoot straight up.
I did a geyser watching porn Thursday, it was awesome.
by Madmike the Malevolent January 23, 2007

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