Knee pit sex
Knee pit sex refers to a sexual practice in which the penis is pressed or rubbed between or against a partner’s knee pits. The knee pit can be experienced as a sensitive and, for some people, erogenous area. In personal ads, the abbreviation KKF is sometimes used for this practice.
As with any sexual activity, consent, hygiene, and attention to physical comfort are important. Pressure, friction, or awkward body positions can feel uncomfortable, and the activity should be stopped if pain occurs. It should only take place in a private, safe, and mutually enjoyable setting.