Talking off ones clothes and running naked in a public race is called -

Ref: Textbook of forensic medicine and toxicology (V.V.Pillay) 17th edition, page no.416 Exhibitionism refer to sexual gratification obtained by repeated acts of exposing one&;s genitals one&;s genitals to a stranger or unsuspecting person. Mooning is the display of one&;s bare buttocks by pulling down trousers and underwear. Voyerism refer to the repitative seeking out of situation in which unsuspecting women might be observed when they are grooming themselves, undressing, bathing, or couplating. Undinism is the sexual arousal obtained by witnessing the act of urination by someone of the same or opposite sex.