backwank
To get revenge on a partners refusal to participitate in sexyness - once the said partypooper is asleep unleash hellfire and throw arcings rope of jism upon her unsuspecting bare back.
Rob - "Did you and Fran get rude last night ?"
Steve - "No, the bitch wasnt interested - had to settle for a backwank instead! Her back's as smooth as an eel now!"
Steve - "No, the bitch wasnt interested - had to settle for a backwank instead! Her back's as smooth as an eel now!"