"Mommy, I wish we had a vehichle." To which I replied, "honey we do, we have two, our van is a vehicle and so is our truck." "No they're not," she infomed me, "they have tops on them." "Oh, I said, a convertible, you wish we had a convertible."
"Mommy, look, I have nipples just like Daddy." Laughing, "no honey you have freckles just like Daddy, those spots are called freckles, not nipples."
In a very serious tone, "Mommy, if you drive your car and you need gas, and you don't get gas, and you keep on driving your car...you'll get a flat tire."