Yes, so you're naming your kid $0 (the quotes were there so that the myocom script didn't interpolate $0).

I guess in my world, everyone interpolates when they speak (so 'that over there' actually refers to an object). Arguably, though, that happens when you hear/read, so when someone says "What's that over there?" you interpolate that to "What's the hairy monster" (assuming there's a hairy monster over there) and you can answer accordingly.

But for the purposes of our script here, when Bob says "Hey, $0.", $0 (the kid) hears "Hey, Bob." Bob is incapable of producing '$0' without escaping it in some way.