someone who masturbates by rubbing against another person (as in a crowd)
frotteur详细解释
frot.teur n.（名词）A person who engages in the sexual act of frottage.性别擦印画家：从事性别行为的性别艺术擦印画家 来源：French French from frotter [to rub] * see frottage from frotter [to rub] *参见 frottage
