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[S]timulation of the penis using the buttocks, often used as a form of mutual masturbation. It differs from anal sex because no penetration of the anus occurs. The penis is stimulated by moving between the buttocks.
Learn more about intergluteal sex from Wikipedia.
First published on 05/01/2015 and last updated on 12/26/2017
你年滿18歲了嗎？
有一天你會成年。 在此之前，隨意瀏覽沒有圖像。 等待！ 我18歲或以上。
