When you burp and you get the taste of puke. Similar to a shart, where one farts and a little shit comes out, but in the mouth area.
Guy 1: *Burp* Oh shit, i just made a mouth shart
Guy 2: Aw, you want some Sprite?
by Diego Chinchilla May 9, 2010
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The shape your mouth makes when it's go a cock in it; a cock sucker. A phrase commonly heard on the Bubba the Love Sponge Show - Sirius satellite radio on Howard 101.
That guy was such a jerk that he should be a candidate for round mouth of the day.

Hey man, why are you trying to fag me out all the time. You're such a round mouth.
by Roundy February 23, 2008
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A vaporizer, or E-cig. Named so because socially they function identically to fedoras, ie. users think they look cool and rebellious, when in fact the opposite is true.

In at least two cases they are worse than fedoras, as the huge clouds are far more obnoxious and its hard to get a vapist to shut up about his rebuilt atomizer and sub-ohm bullshit.
1: Is the fog rolling in off the lake?

2: Nah, just some mouth fedoras on the corner.
by spenndiagram December 12, 2015
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A term used to describe someone who curses a lot and generally talks about inappropriate and disgusting things.
Girl: I bet you'd love me to finger bang you in your arsehole until you cum.

Boy: Piss off you foul mouthed dirty bitch!
by duelpro2 January 6, 2014
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An endearing term used to describe fellatio. A blow job.
"I can't wait for you to come home sweetie! I'm going to give you a big mouth hug!"
by rozilla May 24, 2006
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These are window warriors who talk tough but can't back it up.
He said he would kick ass? Hahaha Bahahaha, he is just got mouth maggots!
by I, Wreckerrr April 23, 2021
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The act of paying your rent in the form of oral sex.
Landlord: You're behind on your rent, I'm going to need to collect some money.

Tenant: Pull down them trousers, you're going to get some mouth rent instead.
by Fudge122 April 1, 2016
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