We told him that you could tell the houses that had them because of the tall antennas on the roof. You could tell if they had them in their cars by their license plates that are different. He still had a look on his face of puzzlement. Why would someone have one? What for.
We discussed how they could talk to people all over the world. Blank stare. Crickets chirping.
Finally I said that it is Twitter for old school people. Ah yes, something he could understand. They are using a box of some sort filled with electronics to talk to people from other places.
What a great idea. Maybe we could call it something else...like a computer.