Boys have penises and girls don't. Girls chests are bumpy and boys aren't. Is that different for you? You aren't a Kokiri, you might be different than that. Deku Scrubs are. They don't have penises or bumpy chests.

[Does the 10 year old have to give you a lesson on sex and reproduction, Sasuke? He grew up in the middle of the woods. He understands a lot more about nature than most give him credit for.]