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Volcanic fluff is the sexual act of shaving your pubes off, inserting the pubes in your significant other's anus and lighting them on fire. Get your partner to shit the pubes out that is mixed with their own poo while making volcano noises.
Guy 1: Man I just gave my girl a volcanic fluff last night

Guy 2: Lucky! How was it?!
Guy 1: it was an explosion of pleasure!
by ah_jessaboltins February 05, 2014
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