My daughter made dinner last night and that same son who says things like "thrice" looked at her and said, "You know what I would do if I had 3 thumbs?"
"Uh, no, what?"
"I would wish for another so I could give your food 4 thumbs up!"
My kids were milling about the house. Exasperated, I looked at them and said, "Kids, go play and use your imagination!"
My engineer-ish son looked at me and said, "I used my imagination twice today and it got me nowhere."