Ass-To-Mouth
When a man -or- a woman with a strap-on fucks a woman -or- a man in the ass, and then immediately puts the penis -or- strap-on into the woman -or- mans mouth without cleaning it first.
As a straight couple:
Dude, I gave my girlfriend ATM yesterday and now there are weird sores on her mouth!

As a gay couple:
Like, I totally like fucked my boyfriend in the ass yesterday then like stuck it in his mouth, it was like hawt.

As a FemDom couple:
My husband took my dirty strap-on in his mouth yesterday after I fucked him in the ass. He loves it when I give him ATM, that little bitch.
by FemDom Bitch September 12, 2007
Get the atm mug.
All Terrain Masterbater
someone who is so incredibly bored and horny that they masterbate anytime and anywhere possible.
Man he is such an ATM i cant believe he jerked it in the gravel pit!
by joelarryasshole January 31, 2007
Get the ATM mug.
Initials stand for Ass to Mouth. This is the transaction of a male pulling out his penis from the depths of a female asshole and placing it directly into the chicks mouth. There is only a 5 second grace period or the transaction is canceled from extended drying.
1. I pulled a quick ATM transaction on Marie last night.

2. (Prostitute talking) Can we stop! I need that money from the ATM
by CJdaTruth November 10, 2010
Get the ATM mug.
Angry Troll Monkey: Angry, loud, obnoxious girl that looks like a mix between a monkey and a troll. Watch out, some ATMs have been known to fling their own poo like their monkey namesakes.
"Damn, last night I had this crazy ass anal sex with this ATM! She even gave me some ATM (ass to mouth) action! It was hot yo!"
by Mr. Ballsack February 18, 2005
Get the ATM mug.
Guy 1: "Yo bro, did you really eat that ass out last night?"

Guy 2: "Fuck yea dude!!! We straight ATM'ed at my crib!"
by manwhoeatsu October 19, 2012
Get the ATM mug.
Ass to mouth, is when a man is fucking a girl in the ass then "transfers" his cock to her mouth so she can taste her sweet own ass.
I'm gonna atm that bitch tonite!
I bet she's an atm!
by peter pumpkin October 26, 2006
Get the Atm mug.
Awareness Through Movement. Group classes in the Feldenkrais Method.
So, are ATMs really just a bit of twatting about on the floor in the hope you'll be less of a tit?

Yeah, i guess that just about sums it up!
by HollaBackGirl2 December 18, 2007
Get the atm mug.