Masturbation 5

I'm not sure how the rating scale works for this one. There are three things that, if practiced, can prevent masterbation from becoming a bad habit, a modicum of restraint, a polite level of discretion, and a good technique. 

And for the best quote on the subject, the always reliable Woody Allen once said that masterbation is like playing Bridge, if you don't have a good partner you need a good hand.