My son is ten years old. The other day I accidentally walked into the upstairs bathroom, without knocking, and caught him drying off after a shower. I was absolutely shocked to see that his penis was hanging down at least 5 inches. I said "sorry" and quickly exited the bathroom.

I realize that kids are maturing much faster than we did, but this seemed very odd. Anybody else have a similar experience, or is this just a unusual? By the way, my husband's penis is average size, so I don't think it is a case of son like father. Thoughts?