This Is the Time

Completing the answer to the young man who asked if he should sleep naked and masturbate every day:

Avoiding the risk of prostate cancer and relieving the constant boners aren't the only reasons you should be masturbating every day.

This is the time you should be learning about your body's response to sexual stimulation; what feels good, what doesn't. It's also your opportunity to learn to recognize what is called The Point of No Return. That is the point at which you cannot stop the ejaculation. You're going to cum and there is nothing you can do except...cum.

Because cumming before you want to (premature ejaculation) isn't all that pleasant.

Frottage, or Frot, is a good way to learn how to control yourself and ready your response to intercourse. 

If you squeeze the butt cheeks as you thrust and release the muscles as you pull back, that affects your level of arousal because it stimulates the prostate.

Using a masturbation sleeve - something which you might slick up with baby oil (or some other type of lubrication) - is also a good idea. This will introduce you to the sensation of penetrative sex and help you learn to control when you cum. 

These are the years you get to practice, practice, practice so that, when you get into a sexual relationship, you know what you're doing.