active algolagnia algolagnia algolagny amphierotism autoeroticism bisexuality coprophilia exhibitionism fetishism heterosexuality homoeroticism homosexualism homosexuality incest incestuousness lesbianism masochism narcissism necrophilia paraphilia passive algolagnia pedophilia sadism sapphism scotophilia sexual inversion sexual normality sexual preference swinging both ways transvestitism tribadism tribady voyeurism zooerastia zoophilia