Oftimes come things you shouldn't have said.  Or at least that's how my dad puts it.  In this case, what comes out is unintended commentary on one's driving style:

Me: Charlotte, what does the red light mean?
Charlotte: Stop!
Me: What does the green light mean?
Charlotte: Go!
Me (curious, because we haven't covered this one in the daily drives): What does the yellow light mean?
Charlotte: Go FAST!!!

Clearly I need to stop blowing through yellows with her in the car...