The Beginning of "Sam-isms"

I've been teaching Sam that "Mommy has a baby in her belly." He caught on quickly.

So quickly, in fact, that now Sam has a "Baby mouse" in HIS belly. He pulls his shirt up, points to his belly, and says, "My baby mouse." "Sam - you have a mouse in your belly?" "Yes... MY baby mouse."

In fact, this 'mouse' is making several appearances around the house. Sometimes it is a Baby (as in, small - as in, in his belly), sometimes it is a DADDY Mouse (usually in the corner of the living room or bedroom). Sometimes he says night-night to the mouse.

I'm not really sure WHERE this mouse comes from, but it really makes me smile.