A sexual act involving coating your penis in baking soda, then proceeding to fill your sexual partner's vagina with vinegar. You then fuck them, and cause a reaction to explode out of the vagina like a volcanic eruption. Then, you take a vacuum and quickly suck out the leftover liquid. After this, you engage in a Tony Danza. Good luck with your relationship after this

Originated by two crazy youngins in Kentucky. It is rumored that one had a hand in creating the Boner Howitzer.
Guy 1: "Dude I totally gave your sister the old Dry Eruption last night. She flipped shit!"

Guy 2: "WTF dude, that's extremely fucked up! I have to use that vacuum!"
by Bhowitz September 13, 2009
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When your ex-girlfriends start surfacing in ways that really screw up your life.
In reference to golfer Tiger Woods, the New York Daily news ran this comment on December 14, 2009: "The crushing financial blow came as Woods, 33, endured another humiliating bimbo eruption."
by Bickle of Xi'an December 15, 2009
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When a male hasn't masturbated in a long time so when he does there is a very large amount of semen
I haven't masturbated in a month there might be a white eruption soon
by Matts a mud cracker November 29, 2016
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After someone tells a boring or mundane story, or a joke that nobody laughs at, conclude it by explaining that a volcano erupted afterwards
Olivia: I was doing my washing up when the sink overflowed and my feet got wet.
Mike: And then a volcano erupted.

Eric: Why did the chicken cross the road?
Alex: Why?
Eric: Because there was no traffic coming.
Alex: And then a volcano erupted.
by ManfredPang July 2, 2011
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The violent result of a failed attempt to hold on to your shit for that little bit longer.
1)"did you hear? dave anally erupted on barrys face...."
"ohhh poor him"

2)My Anal Eruption caused continental shift.
by CaptainYellowShirt August 22, 2007
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When you pour diet coke inside a person's anus just befor anal sex. You then put Mentos tablets into a condom. Put that condom on your dick.
Insert dick into said filled anus. Fuck that ass until the condom breaks.
My partner allowed me to perform the erupting volcanal last night!
by 22thebenzok July 27, 2019
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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
by Wo Bist Du Devin November 11, 2009
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