Caleb is truly obsessed with the Teenage Mutant Ninja Turtles, which brings me back to the days of being a kid, when my brother shared the same obsession. Caleb hasn't seen any of the newer stuff, like TMNT or anything, but we did find some of the old cartoons which has only added to the obsession. Anyway, in one of the cartoons, "Master Splinter" mentioned something about karma. The minute I heard it, my stomach felt yucky as I began thinking about how I was going to talk to and explain that to a 4 and 5 year old.
A few days later, the kids were playing Ninja Turtles, and I overhear Emma and Caleb:
Emma: Come on Caleb, let's play "Car-math"
Caleb: No, I don't really want to.
Emma: Well, what about "Truck-math"?
Caleb: Mom!! Emma wants me to play "Car-math" and she wants me to add up all the cars.