Got to hand it to Dr. Anthony Zaffuto, who narrates this "instructional" video, there's something you can teach about man's favorite pastime - masturbation.  Some of porn's biggest names show more than 40 massage techniques and different ways of jacking off and prolonging orgasm.  That, coupled with these familiar hot bodies talking about their personal jerk-offs, makes for a hot home self-lesson you'll surely want to keep practicing until you get it right.