What term describes sexual arousal by rubbing oneself against a non-consenting stranger in public?

The term that describes sexual arousal by rubbing oneself against a non-consenting stranger in public is frotteurism. This paraphilic behavior involves experiencing sexual pleasure from physical contact with another person, typically in a crowded place where the act can go unnoticed. It is important to note that frotteurism falls into the category of sexual offenses as it involves the non-consensual act of touching or rubbing against someone without their consent, making it a violation of personal boundaries and autonomy.

In contrast, the other terms refer to different behaviors: exhibitionism involves exposing oneself to unsuspecting individuals primarily for the purpose of sexual gratification, voyeurism is about gaining sexual pleasure from watching others engage in sexual activity without them knowing, and sadism involves deriving pleasure from inflicting pain or humiliation on another person. Each of these terms describes distinct behaviors within the realm of sexual expression, but only frotteurism specifically pertains to the act of rubbing against a non-consenting person in a public setting.