So my answer is NO, there is no need to tell your boys about PE. If your 16 year old kid asks, ” How come my peter is smaller than the other kids?” Then that might be a different story. But having raised 3 boys myself, I would find that to be a very remote question from a 16 year old.
OK, I agree with you monument, but consider that penis size isn’t a father-son common topic. I’ve never ever had a conversation about this with my father, however this is an issue of my interest. Men, (no matter their age) usually don’t ask other men how to make bigger their penises, because they feel small. Personally, I don’t know you, I think that your children will feel embarrassed speaking about their small penises. It’s not like talking about sports, girls or sex. So, I think that maybe it would be correct to have a frank and open conversation with your son, (at certain age) and inform him about penis enlargement techniques, but not asking him to do them. After that, he will have the knowledge in his hands, so he will take his own decision on this practice. I don’t know, perhaps by doing this, you could fortify an important part of his personality and self-confidence.