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1.
Masturbating to the movie or television show M*A*S*H.
Person 1: "Hey, I noticed there was a box of tissues next to the living room TV and your complete series box set of M*A*S*H was out. You weren't..."

Person 2: "Yes, I was M*A*S*H-turbating."
by Mr.ChrisHansen October 23, 2012