A rather graphic representation of a girl on her period.
Man, that girl was bleeding so heavy it looked like an upside down volcano erupting.
by sullent May 02, 2011
The act of deficating in an explosive manner. This is usually a diahrea dump resembling a volcanic eruption, upside-down.
I just took the worst shit ever. It was an upside-down volcano.
by ruppge November 12, 2007