6 YR OLD BOY BEHAVIOR

I HAVE A 6YR OLD BOY WHO I RECENTLY CAUGHT IN THE BATHROOM WHILE SITTING IN THE TOILET PLAYING WITH HIS PENIS BUT IN A SEXUAL KIND OF WAY. I WANT TO KNOW... IS THIS NORMAL IN A 6YR OLD BOY FOR HIM TO BE CURIOUS AND DO THIS? OR MIGHT HE HAVE LEARNED THIS FROM SOMEBODY? IM CONCERNED ABOUT THIS BUT  I WOULD ALSO LIKE TO KNOW IF ITS NORMAL SINCE HE IS PROBABLY JUST CURIOUS ABOUT HIS BODY AT THIS AGE? SHOULD I WORRY?

[margypops]

It could be behavior he has seen so be observant who he is with,it is also Normal to be curious about his body, children are great copiers, so check out the gut feeling you have just in case.

[MommyFab4]

Honey,
  There's nothing wrong with what he did. He is exploring his body. He probably "tugged" it, it felt good, so he continued. It's natural and okay. So don't panic!! You might give him a complex if you freak out on him and make him think it's wrong to explore yourself thus making him ashamed of his body, and that could be an effect for years to come.