Word used by Jorge Martinez when trying to calm someone down; Slang term for those of Latin-decent, Omar Gaylindo would know since he is Mexican; Word is derived from "calm down."
Omar, clamdown please.
to shut up and drop the subject.
Her: nag, nag, nag, blah, blah, blah.
Him: Ho, clam down.
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!!
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.