Corner masturbation...it's so lewd! "Corner masturbation" occurs when you press and rub your genitals against one of the many "horns" that exist. It is said that this can be a trigger for sexual awakening, and women who have never masturbated before will start masturbating when they accidentally touch their genitals to a horn and feel a sense of pleasure. The various stimulations that are different from what you would imagine will make them addicted to "corner masturbation."