look up any word, like b4nny:
 
1.
During anal sex, going from ones ass to ones mouth.
-Hey man, what did you do to that chick last night?
-I took her to the cash machine.
by mrjswilson January 01, 2008
 
2.
Another way of saying Ass To Mouth, or ATM for short (ATM of course meaning Automated Teller Machine, another way of saying Cash Machine)
She went and did a Cash Machine on me, dirty bitch!
by DJam21 February 21, 2010