How are you?

Me: how are you?
Fu: *laughs* four
Me: Haha when i ask how old are you then you say four. How are you?
Fu: hehe..
Me: boy, you can say i'm fine thank you. How are you?
Fu: i'm fine thank you.
Me: *grin* how are you?
Fu: *turns away and smiles* i told you just now.