thigh sex
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A sex act in which a person rubs their penis in between their partner's closed thighs. Also known as intercrural or interfemoral sex, or sometimes by the Japanese term 'sumata' (すまた).
Not to be confused with kneepit sex or thigh straddling. Use grinding instead when the penis is rubbed directly on the pussy instead of between the thighs.
This tag is somewhat of a misnomer because while the word sex is used, it shouldn't be tagged as such as well. Sex is only when the penis is inserted into the vaginal or anal cavities.