Top Definition
a person who keeps contained and quiet, also keeps things to themselves.

and once they decide to open up and talk... all they do is be a bitch

thus clam bitch
guy 1: dude i havent heard chelsea say anything in months

guy 2: yeah i know bro, shes a clam bitch. one minute shes quiet the next shes a bitch
by chex March 16, 2008
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