"Mum, pick a number."
"Okay, er, seven."
"No, I think you should go for twenty-two."
"Alright then, twenty-two."
"Yes, we prefer twenty-two."
Reaches into empty purse, proffers invisible object.
"Now mum, I would prefer twenty-one."
"Okay, here you are." (I proffer invisible object.)
Pitying look. "Oh come on mama, it's in here."

This on the same morning that he came up with the God remote. ("Press select mama, that makes the sun come out" and so on for about a dozen weather/crops functions.)