1st grade. When all kids begin to look more like jack-o-lanterns then 6-7-year-olds.
Kaden lost his bottom teeth months ago but the top ones became loose this fall. He was very hesitant about pulling the top one out so after weeks of it seeming to hang by a thread, I made a deal with him, "as soon as you pull it out we can put up the Christmas tree."
(Kaden LOVES all things holiday.)
Bam! That's all it took. Within minutes, Kaden walked back into the bedroom, tooth in hand.
Ice-cream reward for that one.