Who Is Ah-shin?

Sometime over the last few days, Cooper has started saying "Ah-shin." We finally figured out he is trying to say Allison. The funny thing is, he doesn't know who Ah-shin is. This afternoon, we were all 3 hanging out at the house when Buford starting barking. I said, "Is someone knocking?" (which is usually the reason for Buford barking). In an inquisitive voice, Cooper said, "Ah-shin?" as if to ask whether Ah-shin was at the door. Jeremy and I started cracking up because it was very clear to us that Ah-shin was not at the door. Pretty soon, we'll have to make sure Coop understands that Ah-shin is Mommy to him.