It was a bird.

[Steve sounds a little bit amused himself.]

It must've fallen out of its nest, and you heard it. You always had good ears, or maybe it just seemed that way since I had the bad one. Anyway, you found it. So we kept it in a box at my place. We'd catch bugs for it during the day, and you spent the better part of a week sleeping over because you said that it was your responsibility as the father to be there.

[He snorts softly.]

I still haven't figured out how we decided that you were the dad.