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To publicly rub one's genitals against someone for sexual gratification, especially without the other's consent or knowledge. (In this sense it is related to frotteurism and not frottage.)
(verb)
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To rub, chafe.
(verb)
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To work leather by rubbing.
(verb)
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A non-penetrative sex in which two males rub each other's penises.
(noun)
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