Today I awoke to hear NJ talking to her mom downstairs:
"You can kiss me on the butt!"
Turns out she'd injured her fanny and The Wife had offered to give her a kiss -- but on the head. NJ didn't understand why, in this case, the healing smooch wouldn't be applied to the point of injury, as per usual.
Looking forward to NJ saying the same thing, but with different intent and vocal inflections, when she's a teenager.