How do you pee like how does it come out of your body and why don't we pee on ourselves anymore?

Your body just functions like that because now that your older you know when to go and use the restroom. When you were younger you didn't know what to do so you peed yourself and didn't care. But now when you do that you might get afraid of what your friends say about it and you get embarrassed

As we get older we begin to control our body.