Tribadism, or ‘tribbing’ is any form of the act performed by two people, in which one’s vagina is rubbed against the other person’s body. Most often performed by two women, the vulva are brought together with focus on having the clitoris rubbing against the other person’s body. However, the vagina can be rubbed against any body part such as a leg, arm, shoulder, neck, or butt. While mostly known as a lesbian practice, it can be done with a male partner as well.
One of the most satisfying positions, and what may be considered ‘true’ tribbing, is shown in the second picture, in which both women have their legs scissored around each other.
The word ‘tribadism’ is derived from the Greek, ‘tribo,’ meaning ‘to rub.’