The process in which two lesbian or bisexual females rub their nude vaginas together to achieve stimulation.
I caught Jessica and Rebecca clashing clams in their dorm room, so I offered them my organic dildo. We all had a good time after that!
by bam! October 24, 2003
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Saw two wifes fighting on the tram last night. 'it was a proper clash of clams '
by neilo5000 September 11, 2015
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When two lesbians are arraged where their vaginas are rubbing together.
These two chicks got naked and had a clash of clams on my bed.
by MissAD April 12, 2019
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