Definition: 69 porn is one of the most famous sexual posture. In this position, two people place themselves in a way that the mouth of the woman is near the man's genitalia and the man's mouth near the woman's vagina, in a way that allows them to have oral sex.
This posture can be performed by either straight than gay couples.
It can be performed laying down, one on top of the other party or side by side. Also, one of the parties can be holding the other upside down while standing up. In this position, genitalia are reached from a different direction, creating a different sensation from regular oral sex.
In this position, the clitoris is licked up and down. It can be licked in order to stimulate the clitoris, providing an amortiguation if the clitoris is too sensible to receive a direct stimulation.
The man's frenulum will rub against his partner's palate, while the tongue may stimulate the foreskin and the upper part of the penis. Another common way is getting the anus or vagina penetrated by a finger.
The term "69" cames from the reference to the fact that the numbers "6" and "9" are rotated 180°, as is also the couple performing this position.