Top Definition
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.
作者 ruppge 2007年11月12日
6 Words related to upside-down volcano
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.
作者 sullent 2011年5月02日

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