We've taken outsmarting mom to a new level.
This evening, while I was explaining something to Ruby, she began making an odd gesture with her hand, over and over. Distracted, I said, "what are you doing?" She replied, matter of factly, "I'm saying, 'I know, I know' over and over in sign language." I suppose that's less annoying than saying it out loud, but really, who would have thought?
Apparently they learned to sign Jesus Loves Me (this "I know") in Sunday School. I'm sure her teacher didn't foresee the smart-aleck use.