ass to mouth conversion 

This person is a fucking idiot because A: this is retarded and B: ass to mouth is for when you're fucking a whore in the ass & slam your dick down her throat right after.

Methane isn't converted to carbon dioxide because CO2 is the byproduct of aerobic respiration, which involves OXYGYEN not METHANE you stupid ass fuck. ass to mouth conversion, ha.

ass to mouth conversion by butt_dog November 16, 2006

Sarah Palin's mouth 

The place on most humans where shit comes out. See also: asshole.

Hey, douche, I've heard your conservative justification to screw the poor while giving the rich more money just one too many times. Please shut up before I shove this spatula up your Sarah Palin's mouth.

Sarah Palin's mouth by ChuckChaser69 June 7, 2011

take a shot in the mouth 

to allow someone to ejaculate in your mouth

"If it'll get me a couple of hundred miles across the country, I'll take a shot in the mouth." (from "Jay and Silent Bob Strike Back")

take a shot in the mouth by BlueAir September 13, 2004

whose in my mouth 

a sex game where the girls are blindfolded and they have to guess whose penis is in their mouth.

yo danielle and jamie played whose in my mouth lastnight and jamie guessed everyone right

whose in my mouth by the assassin07 December 23, 2007

Open Mouth Breather 

Open Mouth Breather - An individual that breathes through their mouth when not exerted. The individual appears to be, and ususally is, perpetually confused, not very bright, an idiot.

You see someone from Wisconsin driving along. As you pass them you see their profile and their mouth is wide open, an Open Mouth Breather. Although they are looking straight ahead, they don't see traffic stopping and slam their brakes on at the last moment. This is an example of an OMB (Open Mouth Breather)

Open Mouth Breather by Nicholas Esayian November 2, 2007

Meth Mouth 

"meth mouth," leaves users' teeth black-stained, rotted and often unsalvageable.

Grimey boy did so much crystal meth his teeth looked like rotten chicklits!

Meth Mouth by JTD August 22, 2005

orgasm in my mouth

When you eat food that is so freakin fantastic that it's like having an orgasm... but in your mouth... and without a mess.

Man, that Thai food was so phat that i'm having an orgasm in my mouth. I'm spent!

orgasm in my mouth by Leif June 10, 2006