When my oldest son was 4. My S.I.L. and I took a few of our kids and went grocery shopping. She had 3 kids and I had 2. While driving home we decided to stop and get a soda because we were parched from shopping. I was driving and as I went to take a drink of the soda my oldest son hollered from the back seat, "Mommy, your not supposed to drink and drive." I still think is hilarious and it let me know that all those tv commericals that drive us crazy do sink in to the young ears.