Running your mouth mean when you keep talking crap continuously.
Stop running your mouth before you start a fight idiot.
by Aestheticxlly_0 October 19, 2018
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saying smart ass things and generally bitching at a fast pace. Yelling out paragraphs of bitchyness really quickly. Blabbing nonsensical things in an argument just to take up time and have your voice heard.
(the running part means that is is done at a fast pace or else it would be called "walking your mouth")
"they were in a rational argument and she said something that offended him, so he started running his mouth to show his disaproval"

EX.

Him: hey, Jessica
Her: My name isn't fucking Jessica
Him: fuck, fuck, fuck, man, fuck, just fuck it man, fuck, fuck, fuck
Her: What the hell is wrong with you!?
Him: you need to stop running your mouth.
Her: Uh, I'm pretty sure it's you who is running their mouth.
by narcobitchleptic May 30, 2011
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Self explanatory, there are testicles in your mouth
Yo why you got testicles in your mouth?
by PkTheArsonist June 26, 2021
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The phrase people say when trying to fuck up your focus when playing video games, sports or having sex.
(guy steps up to hit driver)
Guy: "silence please"
Douchebag: "Dick In Your Mouth!"
Guy: "Dammit Chris!"
by mucusalarmclock June 5, 2011
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A bragging statement after you do something spectacular which is meant to be answered with dumbfounded silence.
Bruce and his beerpong partner Sally were losing 9 cups to 0. Suddenly, they proceeded to hit 10 cups in a row to steal the victory and Bruce exclaimed, "Where's your mouth?" Their opponents shook their heads and Bruce and Sally embraced.
by toolguru October 23, 2007
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braggin and talkin shit you cant back up, if you run your mouth you'll most likely end up being beaten for it
damn dat fuck up been rollin his mouth again, ima fuck dat nigga up
by gangsta god January 12, 2005
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sucky insult used by stiv
you:hey stiv
stiv (girly voice) : because there are nuts in your mouth
by 69 assassin May 17, 2008
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