Little Suzie has just turned six. Her dad told her: oh my little girl, now you are six years old, it’s time you learn about things of the world. Then he dropped his pant, showed her his penis, and said: do you know what this is?
She said: yes daddy, that’s your pee-pee!
The dad: oh my little girl, you are six now and all grown up, and grownups call it cock!
Suzie: well daddy, I have seen many cocks, and I tell you that’s a pee-pee!