We have been driving to PA for the last 7 hours. Here is the most recent conversation:
HAS: You said we could call GiGi later and it is much later
ME: I know buddy, but we don't have a good signal because we are in the mountains
HAS: What's a signal?
LPS (3 yrs old): a turn signal, brother
HAS: oh, ok
David: no, buddy. It is a cell signal, the kind a tower sends to our phones to make them work.
Love their inquisitiveness and their responses to each other.