Its when you put hot sauce on your genitals and ejaculate in a girls anal cavity then she pushes it out.
Guy: hey what happened to our texas pete
Guy2: I did the red volcano to this girl I met at the bar last night.
Guy2: I did the red volcano to this girl I met at the bar last night.
by tuckermax101 December 1, 2009

When a person comes in someone’s ass and then the receiver projectile farts out the cum in an upward direction.
Michael: “I heard Lisa does backyard volcanos, man.”
Paul: “Now that’s a natural disaster I’d like to be a part of.”
Paul: “Now that’s a natural disaster I’d like to be a part of.”
by Analymous May 13, 2018

When you are having rough Anal sex until the person receiving it has to diarrhea. When the diarrhea comes the person does a handstand shooting poop all over, looking like a Volcano
by Guacamole Weiner Jew June 25, 2020

When you do the downward dog yoga position with your butt in the air and erupt explosive diarrhea like a volcano
by catdog0410 December 26, 2022

A person who chats a lot of shanter (shit banter) can be reffered to as a 'Shanter Volcano', in the sense that the person in question is erupting with shanter.
by gandhi the grey May 29, 2012

One person lays down on their back with their mouth open. Another person fills the first person's mouth with spaghettios straight from the can, then proceeds to elbow drop the first person in the stomach, resulting in an eruption of spaghettios from the mouth of the first person.
Boy if you give me any more lip I'll have to give you the spaghettio volcano.
Steve still hasn't recovered from the brutal spaghettio volcano he received last week.
Steve still hasn't recovered from the brutal spaghettio volcano he received last week.
by tastefulxenophobia March 2, 2017

Al Rocher was at the Olympic games in Rio watching the gymnastics competition and when a dark mass suddenly started covering the l crowd. He realized it was a fudge volcano erupting every where
by Dillyguy4789 May 14, 2016
