cash machine
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.
-I took her to the cash machine.
Cash Machine
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!