(we are in the car driving to E's physical therapy with a bottle warming in a mug in the cupholder)
me: aw crap!
M: why did you say crap mom?
me: oh, I spilled some water.
M: why did you spill water?
me: because I was turning the car.
M: why were you turning?
me: because cars have to turn when they drive.
me: because you have to follow the road or you will crash.
M: why will you crash?
me: because the car just will.