I have a question. Ok, when is the age when you start to have semin ejaculate from your penis. I am 13 and I masterbate and nothing!
Dear David,
There really is no normal size for a penis. This varies, so don't worry yourself about it.
Masturbation is perfectly normal for a 13-year-old. The important thing is to do this privately.
You might like to look at a very helpful book about the early teen years and how boys develop. The book is called What's Happening To My Body? Book for Boys (written by Lynda Madaras). This book discusses the changes in your body, and addresses the very sorts of questions you hasked today. Good luck. Dr. KDK