Definition:
Frottage, also known as dry humping, is sex without penetration where both partners rub or grind on each other to achieve an orgasm. This can be done either clothed or unclothed and can be achieved genital to genital or genital to other body parts. Frottage can be used as foreplay before anal sex or as the primary means of intimacy.

Other Non-Penetrative Sex Techniques:
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Also Known As: dry humping