volcanic ass eruption 

An explosion of the rectum after eating too much food the night before.

Or

After a holiday dinner at a relatives house and you eat something that doesn't agree with your system causing irritable bowel syndrome resulting in burning or the rectum and violent ass eruptions associated with bubbling gas in the stomach nicked named "bubblin' brown sugar".

Man dem greens, macaroni and cheese hit the spot...boy! Rumble, rumble...poot, poot, fissssst. Ooooh!....Oooooooh!....Somebody help me please!...Where da bathroom at...pooot, pooot, fisssst. blurrrrrrt.....fisssst.

Ooooohwheee! got dem bad guts...what yo mamma put in dem greens man?! I gotta doodoo bad baby got a volcanic ass eruption comin' thru!

volcanic ass eruption by lil dookie November 5, 2013

Sexual Eruption 

Whenever a guy Gets a red rocket and squirts out through his penis hole.

So there I was, Laying on my bed, watching porno, There were two lesbians licking eachothers chest, and rubbing eachothers clit, then, I got a hard one. I was only in my boxers, then, I wasnt. I took them off, and started rubbing my big fat dick, ( Im an 11 inch by the way) My hands began hurting so bad, I kept taking breaks, even though I didnt want to, but my hand started kramping up, so I went into my kitchen tried taking pain pills to help, then went back into the room, layed down, realizing, I had a red rocket, I started beating off more, I knew my hand hurt, but I kept going, thats when the volcano exploded everywhere, I got a sexual eruption

Sexual Eruption by Wo Bist Du Devin November 11, 2009

South Bronx Eruption 

while getting a blowjob you try to sneak out a fart but have a hershey squirt, thereby in reaction your partner vomits on you.

My pal Eddie was driving home with his girl and while getting a blowjob he had a South Bronx Eruption.

South Bronx Eruption by kevincraig May 6, 2005

Rectal Eruption 

When a man or woman (most likely woman) becomes too excited at a moment, a sharp smelling fluid drives out of the anal cavity, thus making warm tingling feeling most related to apple pie.

"Brah, I can totally see your Rectal Eruption!"

"Woah, thanks man!"

Rectal Eruption by Benjarvus August 27, 2008

post eruption magma ooze

after a male ejaculates, take your thumb and forefinger, pinch the post coitus flaccid penis (like you’re are squeezing out the last bit of mayonnaise from a package from chik fil a) from the base to the tip and that is what comes out and oozes down onto your fingers

ejaculates male flaccid mayonnaise chik fil a post coitus post eruption magma ooze

post eruption magma ooze by ReXXXgoliath September 23, 2013

faithful eruption

The act of "blowing a load" in/on/beside the girl you haven't seen in at least 6 months due to a long distance relationship after staying faithful to her for the duration.

I hadn't seen my girl in 8 months, but man ... I gave her the best faithful eruption she's ever had.

faithful eruption by seudoname October 12, 2017

Asscano eruption 

This phenomenon mostly occurs in summer. When a person is naked and lying face down on the bed during sweating, the farts will spray sweat from the buttocks into the air, and the sweat loses heat as it moves through the air, reducing the temperature to below body temperature. Eventually, when the below-body-temperature sweat falls back on human skin (mainly the thighs), it creates a chill, and this phenomenon, known as Asscano Eruption, is perceived.

Example: Fuck it! I just got a Asscano Eruption and it ruined my dinner!

Asscano eruption by Respel Mallur July 21, 2022