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when your dick is up right and cum drips down the wang like magma/lava coming down, some will shoot up like a volcano
My dick was upright and cum started shooting out like a cum volcano
by chris6666666666 June 09, 2009
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2
A volcano of cum, it's better than saying Cum Dumpster or pool.

Often referring to whores and what not
by Isaak D November 20, 2008
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