69 (sex position)
The 69 position, also known by its alternate name soixante-neuf (taken from the French for the number), is one of the most commonly known sexual positions. It provides for simultaneous mutual oral sex.
In this position, two individuals generally lie down, one on top of the other or side by side; alternatively, they may assume a similar position with one individual upright and the other inverted. Upon so orienting themselves, each partner proceeds to orally stimulate the other's genitalia.[1] Members commonly insert a finger or other device into the vagina or anus of the other to provide additional stimulation. Moreover, in this position the more sensitive underside of the penis is placed against the top of the receiving partner's mouth rather than against the tongue, thereby creating a sensation different from that of traditional oral sex. Ironically, in certain instances the very intensity of the sensations this position can produce may pose an obstacle to the attainment of mutual pleasure, as some individuals report finding it difficult to concentrate on giving stimulation while receiving it. An old joke suggests that in in this case, the pleasured partner has received a "68" and will in turn "owe the performer one."
Origin
The term "69" derives from a (perhaps facetious) reference to the fact that just as in most typefaces, digits 6 and 9 are the same character rotated 180 degrees, so also in this sexual position, the partners are oriented 180 degrees with respect to each other.
Alternatively, the term might be traced to the dictum of Rudyard Kipling regarding sexual practices of tribal societies:[2]
There are nine and sixty ways of constructing tribal lays, / And every single one of them is right.
References