Ass-to-Mouth, ATM: When a phallus transitions directly from anal to oral sex. .. Now burlesque shows are typically conservative strip teases meant to appeal .. into age play or fetishes for infantilism, scat, watersports, humiliation, dominance, . Ass-to-Mouth ATM Definition - Ass-to-mouth is a slang term which describes the does not clean his penis before moving from his partner's ass to their mouth. 24 Nov It is also known as "water sports," which is why when you Google image ATM. This can stand for "automated teller machine" but most people.