Junk Mouth

A term used in reference to that asshole Alan spitting lies. Like pure junk pouring from his mouth.

Alan: Yo I got that hotty last night to come back with me.

You: No you didn't, junk mouth.

Junk Mouth by Jack_of_wades March 19, 2016

piano mouth 

Used as a euphemism for bad or rotten teeth. A comparison of one's good and bad teeth to the keys of a piano.

"Oh great, here comes piano mouth."
"I could've gone without seeing piano mouth today"

piano mouth by Baditaliansausage January 2, 2017

Monkey Mouth

Someone talkin on n on bout shit they have no idea about
//
Stuttering mumbling

Goofy: aye foo... I like cant even... man Im like bro... you my homie... bro I like remember... remember that time when?...

Me*Internally*: IF YOU DONT SHUT YO MONKEY MOUTHING ASS THE FUCK UP!

Monkey Mouth by Munki King November 24, 2020

Party mouth 

A Derivative of potty mouth, from the Latin word bocca de fiesta, one whose mouth is used for partying, usually online sometimes sex acts

“Josh u have such a party mouth,” thanks ken.

Party mouth by Latin king January 31, 2021

poop in your mouth 

Poop in your mouth is slang for talking crap.

Poop in your mouth: That boy had so much poop in his mouth he didn't know where to spit it all.

poop in your mouth by keepinit 100 all day boiy August 2, 2016

Shut your whore mouth 

Basically, It means: “Shut your offensive mouth.”

My bitter rival: Dude, Why do you like that show: Soul Eater?? That show is stupid and the plot is obscure!!
Me: Shut your whore mouth!

Shut your whore mouth by ScreamoKevin December 9, 2020

(straight) from the horse's mouth

from the most official source(from the fact that a horse's age can be determined most precisely and directly by examining it's teeth)

He gets his stories straight from the horse's mouth.

(straight) from the horse's mouth by Light Joker July 23, 2005