A very dangerous sex move. First, you take the onion volcano from a hibachi restaurant, put it on your companion's asshole. Then, squirt lighter fluid in their asshole and ignite it with a flame. While the flame is still burning the male inserts their penis into the women or mans asshole for a nice warm, burning sensation.
by Ty Laird January 9, 2020

When you are so fat that the skin around the base of your shaft becomes so plump that it starts to engulf your dick.
by ggnoodles July 23, 2018

by FiftyShadesOfPink February 13, 2023

by ilovesmashingfemboys August 21, 2025

by VesuviusBoy November 14, 2021

The best part of hibachi when the chef makes a small stack of raw onion rings, puts vegetable oil in it, and lights it on fire whilst it expels steam and flames, like a volcano. (Hence the name).
Them: how was the hibachi dinner last night?
You: it was great, except I missed the onion volcano while I was in the restroom.
Them: aw man, that’s the best part!
You: it was great, except I missed the onion volcano while I was in the restroom.
Them: aw man, that’s the best part!
by Bandgeek2003 December 26, 2019
