Owen or Goose?

Owen has been called all sorts of nicknames since before he was born. I listed them out in a previous post, but his latest nickname from me has been Goose and from his Dad it's been Monkey. I normally call him Goose when he's being ornery and trying to get away from me when I'm changing his diaper or clothes. I was calling him Goose so much that I thought he might actually start responding to that more than his real name so I eased off a bit. The last two days I've been saying Owen more and he's been responding to his name!!! At first I thought he was just turning to the sound of my voice, but I can be saying all kinds of things and the moment I say Owen he turns and looks at me like, what?