Cabbage mouth 

A low budget raggedy mouth bitch, who's always talking shit!

A poorly dressed female with bad teeth and rude with a cabbage mouth.

Cabbage mouth by NewBOOBS2010 January 27, 2010

Vagina Mouth 

A person who has had all of the teeth extracted from their skull and may or may not wear dentures. The term comes from the resemblance of a toothless mouth to the human vagina.

After years of neglect and drug use he finally had to become a vagina mouth.

Vagina Mouth by VitoVane November 13, 2017

ceiling of my mouth 

The upper portion of the inside of the mouth. More commonly and incorrectly referred to as the "roof" of the mouth. This doesn't make sense because it's inside, like a ceiling, not outside, like a roof. The scalp and hair are the roof of your head, and your mouth has a ceiling.

Jim: "Hey Dan, want some tortilla chips or some Captain Crunch?"

Dan: "No thanks. Last night, I made a pizza in the oven, and like an idiot, I bit into a piece right away. The hot cheese burned the ceiling of my mouth. It hurts. I need to eat apple sauce for a few days".

ceiling of my mouth by orangek July 20, 2011

zip one's lip (or mouth) 

to stop talking (See also shut up)

Zip your lip and get to work.

zip one's lip (or mouth) by Light Joker September 5, 2005

All mouth and no trousers 

Someone who can talk a good game but cannot back himself up. Relies heavily on others who are his opposite (able, but a poor orator) to sort out any problems. One who makes idle threats.

Random13yearold: I'll hax your computer! I'll hack a virus!!!111

KFJ: You're all mouth and no trousers, but I'd love to see you "hack a virus".

All mouth and no trousers by kung-fu jesus August 18, 2004

Round Mouth 

A cock sucker
Gay
Fag

Look at that fuckin round mouth

Round Mouth by PorkChopSandwiches February 28, 2008

frog mouth

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.

frog mouth by ADeHoyos July 21, 2005