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A person who talks too much; someone who doesn't know when to shut up
Becky never knows when to shut the fuck up. She is a total mouth slut.
by paper233 January 02, 2015
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2
When your body may be a virgin but your mouth physically and/or verbally isn't.
"I'm just like Jesus." No, you can't be because you're a Mouth Slut.
by Rayne95 January 24, 2015
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