C.C.
Ha ha! Yes, because my youngest (now almost 5) has always been like a tiny Ethel Merman. Her natural volume is LOUD. When she runs into the room and says, "MOMMY, GUESS WHAT?!" I holler back, "I DON'T KNOW, WHAT?" She'll say (in a more normal tone of voice), "Mommy, why are you yelling?" And I'll say, "Oh, I don't know! I thought we were playing a game where we were yelling at each other!" And she laughs, and then tells me what she was going to tell me, but in a normal tone of voice.
Sometimes you've got to fight fire with fire. =)