5 Things You Didn't Know About Male Masturbation - WebMD Male Masturbation: 5 Things You Didn't Know. By R. Morgan Griffin. From the WebMD Archives. Your guide to sculpted shoulders, better biceps, and more. Your Prostate Over 40.Author: R. Morgan Griffin "How to Engage in Safe Urethra Insertion.. - Ash Ketchum Jul 24, 2012If you're working with a man, make sure the penis is flaccid and slowly work the tip of the sound into the urethra. This type of play takes patience and under no circumstances should the instrument ever be pushed or forced into the urethra. Let gravity and the body slowly pull the sound deep into the penis.