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A useful instintual tool used by women to determine the size (or lack there of) of nearby man junk. The cousin to the gay-dar.
Oh, Becky, my peter-meter's going off. That guy must be packin' some serious schlong.
by frank the wank April 27, 2008
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A woman who is very sexually promiscuous. Originates from the idea that said woman's vagina is like a meter for "peters" (penises). Can refer to either the woman or her vagina.
John: So what happened after you left the bar with that chick last night?
Mike: We got it on, but that bitch was such a peter meter she was bonin someone else before I was out the door!
by John Michael Parmon April 21, 2008
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