mutual masturbation

mutual masturbation (usually uncountable, plural mutual masturbations)

1. A sexual activity in which two or more persons simultaneously masturbate themselves, usually while observing or otherwise communicating with one another.
   • 2004, Cynthia W. Gentry, The Bedside Orgasm Book: 365 Days of Sexual Ecstasy , →ISBN, page 229:

     And because you have to let your guard down to let your lover see you pleasuring yourself, mutual masturbation requires trust and caring.

2. A sexual activity in which two or more persons simultaneously masturbate one another.
   • 1997, Donald James West and Richard Green, Sociolegal Control of Homosexuality , →ISBN, page 7:

     This reasoning was used only months later in a decision that further extended common law concepts by holding mutual masturbation between two males criminal. The judge reasoned that "there can be no distinction between the case where sexual gratification is obtained by friction between the legs of another person, and the case where it is obtained by friction against another's hand."

• masturbation

• virtual sex
• outercourse
• circle jerk