sexual slang oral sex position sixty-nine soixante-neuf 69 https://en.wikipedia.org/wiki/69_(sex_position) https://www.wikidata.org/wiki/Q2349 69ing A group of sex positions in which two people align themselves so that each person's mouth is near the other's genitals, each simultaneously performing oral sex on the other. The participants are thus mutually inverted like the numerals 6 and 9 in the number 69, hence the name. sixty-niner sixty-nining 71 68 Sex Slang Words You Should Know Carnal Knowledge: Baxter's Concise Encyclopedia of Modern Sex Sex Variants: A Study of Homosexual Patterns