Q: Why was my kid so great in the car to Costco?
A: He was sleeping in the back seat.
Q: Why was he tired at 9:45 am?
A: Because he doesn't sleep at night.
Q: Why not?
A: Hates me.
Real A: I have no idea but I hope it's a sign of superior intelligence.
BTW, got him out of car and into cart and halfway through store before he woke up happy as a clam and wanted to do some "shopping, mom".