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Small, whitish, particles or crumb-like residue typically found on bed sheets the day after a heavy session of pussy-banging. The volume of fuck crunchies directly varies with: 1) the amount of "wetness" that had been experienced by the woman's pussy, 2) the amount of coming by both parties.
My buddy Ethan sat down on my bed, but was entirely disgusted when he realized that he'd sat in a minefield of fuck crunchies from me & Liz the night before.
by Shel_TR February 06, 2009