Here is how I would handle it, for what it is worth. You sound pretty close, so one night when you are just talking say something like this: "Son, I just wanted to tell you how proud of you I am. I've watched you grow up, and turn into a handsome, smart, funny and amazing young man. I just want you to know I think you are truly gifted, and that you have the ability to go as far as you want to go in life. Sometimes, though, some people out of jealousy will try and put you down, or make you feel bad about yourself and your gifts, because they feel bad about themselves and want to try and feel less inferior to you. Try and le them know they have things about themselves they can be proud of, and they don;t have to put others down to feel better. Most of all, I never want you to feel bad about yourself, because you are a wonderful guy, and very special. I love you son, and I am always here for you if you want to talk about anything, or want to know anything. I know it is embarassing sometimes to talk about stuff, but I will always do my best to be honest, and man to man about anything with you and treat you as an adult about it. I never want you to be afraid to bring any problem to me, big or small---i've got your back, always. I may not always have the answers, but I sure will help you find them. I guess that's it---I love you, I am proud of you, and I am here for you always. I hope you feel like you can trust me enough to be there for you." Don't bring up his dick at all---just let him know you are open about anything he wants to talk about. One of the greatest things a father can do for his son, is to be proud of him, and let him KNOW you are proud of him. How many men would have a lot fewer issues and problems in their lives if they had had a father who made sure that his son knew how much he was loved, and how proud his father is. How much more open the communication. Never underestimate your opinion, or your role is shaping the man your son is becoming. You are his greatest role model in his life. It sounds like you are doing a fantastic job so far, and it couldn't have been easy being a father so young, but you stuck it out, and did, and do, your best for him. I admire your strength and courage and conviction in being a good dad, and I'm sure your son is proud of you, too. Good luck, and take care!