mutual masturbation sexual stimulation masturbation masturbation 306.772 317.1 http://homosaurus.org/v2/masturbation http://id.loc.gov/authorities/subjects/sh85082015 https://homosaurus.org/terms/masturbation Note that this definition of masturbation does not include acts of mutual masturbation. RC560.M3 HQ447 onani Sexual stimulation or gratification of the self. manustupration masturbation, NOS onanism peripheral excitement mutual masturbation 68 Sex Slang Words You Should Know Encyclopedia of Homosexuality The Wiley Blackwell Encyclopedia of Gender and Sexuality Studies Sex-Lexis.com