Sixty-nine or 69, also known by its French name soixante-neuf (69), is a group of sex positions in which two people align themselves so that each person's mouth is near the other's genitals, simultaneously performing oral sex. The participants are thus mutually inverted like the numerals 6 and 9 in the number 69, hence the name. This position can involve any combination of genders. Although not displayed in any of the images, a 69 can also be performed with both partners on their sides, perhaps a more relaxed position.
Variations of the 69 positions include mutual anilingus or "double rimming," and digital penetration of either partner's anus or vagina.
In these positions, the partners are said to experience sexual stimulation simultaneously, but this can also distract those who try to focus solely on pleasuring themselves. The position can also be awkward for partners who are not similar in height.