Who's the boss?

Here's the scenario:

N is doing something that E doesn't like.

E says with authority and pointing finger, "STOP!"

N keeps doing it.

E says again with more force "STOP!"

I say: "Hey!  You are not the boss here, mommy is"

E looks at me and says: "No!  E the boss."

I said: "You are the littlest you don't get to be the boss"

E says:"No. E the boss"

oiy... I think we are in for some fun. ;o)