The notes of Ingleside

This afternoon, on the lovely streets of Ingleside (pictured below), we ran into this.

While it's not unusual to see signs posted around the neighborhood for various things ("roommate needed, 420 friendly," "cheap childcare available, call"), there was something about this one that caught my eye. Looking back now, I am fairly sure that it was the blue painter's tape that gave this particular sign that extra-special something. So we got a closer look.

If my iPhone didn't capture that clearly enough, it says: "My Baby throw my keys through the window if anyone have it Please contact me."

I have two questions right off the bat:
1. Baby as in your boo? Or baby as in your actual baby?
2. The window that this sign is posted next to which has a screen and metal bars across it?

Another Ingleside mystery I'll never solve, I guess...