Should a father show his son his penis?

Yes, let's make sure the essential facts of being human (and all life) are kept secret, daddy's naughty's parts most of all. Sorry, I'm not a puritan fascist - Dad has a penis and junior has one. Is there a secret here? That some people think there should be says a lot about the sickness of America. Scenario: 'Dad, I have a bump or something here'. 'You mind showing me?' 'Why should I - here look.' 'That's nothing to worry about, son, I have one sort of like it. See?' Mystery solved, no worries. And a kid's learning how to grow up to be a man, not a hysterical hypocrate pretending children aren't sexual or don't know by ten what those great appendages are for. The two guys above are comfortable in their manhood. OK, I'll really go off a limb here. There are cultures where parents teach their children the pleasures of masturbation. I see nothing wrong with intelligently and gently teaching children the truth of life, so they won't be terrified of it as so many who answer questions here are.

If a young son asks his father to show his penis to him for educational purposes then this is acceptable and normal behaviour between a boy and his father. Although, with the internet it is less and less likely any boy needs to ask a parent about the human form anymore.

A lot of fathers innocently expose themselves to their sons when in the changing rooms at the local swimming pool. The young boys soon get used to seeing penises from all the males changing anyway. Sometimes they talk about it with their peers when going swimming without Dad. They have a laugh at all the different sizes along with the bums and fat or skinny boys and men. It is all a part of them growing up and learning about theirs and others bodies.