Pre-K philosophy (and no, that's not a reference to Kierkegaard)

Me: Leo, it's bad to leave the lights on in the car, because then it won't start.

Leo: It's bad for Lightning McQueen (what he calls Jeff's car)?

Me: Yup, then it won't go.

Leo: Oh drat, then we'll have to take Mater (what he calls my car).

Me: Leo, you've had a lot of pizza lately.

Leo: I like pizza.

Me: Yes, but you need a diverse array of foods in your diet.

Leo: (pause) Well, my dad poured me a diet coke (what he sometimes calls milk).