to shut up and drop the subject.
Her: nag, nag, nag, blah, blah, blah.
Him: Ho, clam down.
by lkjhsafoiu November 21, 2007
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when a girl jumps into a body of water and accidentally gets smashed by a rock in her 'parts' leaving her unable to swim to shore
CLAM DOWN!! CLAM DOWN!!
by itsmaribitch January 20, 2009
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Shut up and squat. A variation on the famed 'Keep clam!' of Ivor's Acres of Clams in Seattle, Washington. Problem is, it sounds like a back-formation for 'clam up', which it is not, sort of.
You didn't lose your billfold. Look through the car. You'll find it. Just shut up and clam down.
by Byron Black September 30, 2007
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Cara-“clam down brodksi”
Bria-“ITS CALM
Cara-“no it’s clam
by Clammy123 July 26, 2018
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The feminine version of Dicked Down. When a girls pussy rides you hard all night and drains you if all your man juice.
Him: I totally dicked you down.

Her: Naw, i clammed down that dick!
by Maudibert- March 13, 2020
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