Top Definition
1. frog mouth (n) A person who fails to keep information to themselves. Synonym: big mouth

2. to frog mouth (v) to tell someone something that you weren't supposed to
1. I can't believe you just told him that. You're such a frog mouth.

2. I promise I won't frog mouth to anyone.
by ADeHoyos July 06, 2005
When your getting oral from a female
and you take your piece out real quick and her face will be stuck in a frog like manner
Frog Mouth paris hilton
by jmgs May 15, 2009
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