Cincinnati volcano

When you take a dump on an airplane toilet that is so big you gotta get up and take a look. In that moment of excitement, you forget to put the seat down and hit the flush button. The vacuum toilet sprays excrement all over you and the bathroom.
Hey Greg, did you pack an extra shirt in your carry-on? I just had a Cincinnati volcano in the bathroom.
by Tbutter September 24, 2015
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Popcorn Volcano

Jumping in your movie seat with a container of popcorn causing the popcorn to fly up in the air like a volcano.
While watching Halloween X there was a scary scene that resulted in several popcorn volcanoes.
by kidgoat April 06, 2011
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Chocolate volcano

When you cum in a girls ass and she farts on a wall.
I was banging my girl last night anally, I came in her ass, she farted and that cum went all over the wall making a chocolate volcano.
by Kmach17 January 15, 2017
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Underwater Volcano

First, one must conduct the steps necessary to make the Alaskan pipeline viable (shit in a condom, freeze it).

The Underwater Volcano is when a female voraciously pleasures herself with an Alaskan Pipeline whilst in the bathtub and on her period.

Created by A. UoS 2015.
Dan: Hey Mary, fancy fucking later?

Mary: Sorry Dan, I'm on my period! I think I'll just give the Underwater Volcano a try tonight

Dan: No problem, I've heard the Underwater Volcano is a fantastic experience, enjoy!
by ACL1380138 February 03, 2016
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Toilet Volcano

When you take a dump, then when done before you wipe you look down and you see a volcano reaching out of the water, like some majestic mountain in the south pacific.
"I must have eaten some bad bbq last night. This morning after taking my normal dump. I looked down and saw a Toilet Volcano, steam rising from the water. I reminded me of of the last time I was in Hawaii."
by Manshoon July 13, 2009
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Madagascarian Volcano

The Madagascarian Volcano is a sexual act in which a Russian male stands a Madagascarian women on her head, pours various types of alcohol into her vagina and makes her squirt which then causes a massive eruption of female genital fluids as well as alcohol.
Yeah we performed the Madagascarian Volcano last night, subsequently she almost passed out for being in the position for too long.
by bigrussianman69 April 20, 2019
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Exploding Volcano

This is when three guys jizz in your butt and then you squeeze and all the jizz comes out exploding like a volcano.
Oscar let 3 guys jizz in his bum and then he bent over and did the exploding volcano.
by UziQP November 21, 2018
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