Do a girl doggystyle. Cum on the small of her back. When it runs down into her ass crack, slap both ass cheeks together, thus creating an eruption.
by Its 2 ez October 30, 2003
A sex act in which a girl gives you head and holds a lit lighter until you are about to cum. She then extinquishes the lighter on your scrotom as you cum thus creating a 'fire from down below' eruption effect.
by EVolcanomasterD September 12, 2006
by Charlie Kilowatt April 22, 2010
by MC PunkFade January 10, 2008
boy: omfg r u ready babe?
girl: yeah babe im so horny
boy: im gonna give you the best volcano you've ever had!
girl: *creams*
girl: yeah babe im so horny
boy: im gonna give you the best volcano you've ever had!
girl: *creams*
by chrisko January 31, 2008
a sexual act in which one partner is upside (via handstand or being held upside down by another) and projectile diarrheas in the air, like a volcano erupting, while the other partner awaits below to have the diarrhea rain upon them like hot lava
by damnthtsnazty July 28, 2011
by grandeloveee November 30, 2008