#eavesdropping

A husband overhears his wife on the phone arranging a sexual rendezvous with her lover and is left devastated and aroused.

A teenage boy secretly masturbates to porn in the bathroom while overhearing his mother and her friend discuss their sex lives and ex-husbands.

A man overhears his younger brother and his girlfriend discussing blow jobs over speakerphone and gets increasingly aroused by their explicit conversation.