A person who says foul things all the time. ie. as if shit were coming out of the person's mouth
Tell that "shit mouth" to stop saying bad things about me.
by Brian March 12, 2005
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When you finish a bowl of weed from your pipe and the ashes get sucked into your mouth.
The bowl was cashed, but I kept hitting it and got shit in the mouth.
by Scatmouth December 27, 2013
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Shit mouth is a term used to describe a person's vocabulary. This person is usually an over talker. Talks relentlessly about shit that doesn't matter. Mouth garbage, word spewage.
Rick always talks about nothing important to every one, he has cronic shit mouth.
by sMartipants March 2, 2012
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A British expression regarding a moment or situation of grief - Used in scenarios when someone simply cannot comprehend
Doug: Oy bruv, my man is shacking me up with a broad, real peng one too. Problem is she’s a dyke.

Chris: A dyke? Shit in me mouth bruv. No sense in that.

I was hanging out curbside and a car drove by, splattering mud all over my rain jacket... shit in me mouth.
by slimalien March 15, 2020
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A phrase used to express disappointment or frustration.
"You hear Carrie Fisher died?"
"Yeah fam really sucks"
"You hear her mom died too?"
"If you're gonna keep bumming me out you may as well shit in my mouth!"
by Mouth filled with shit January 27, 2017
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like when, you find some dirty ho bag, and your like hey there hot stuff why dont you come over here and shit in my mouth.
hey guys, wendy shit in my mouth last night. You guys are so jealous
by MoistTowelette11 June 30, 2006
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