I started out stupid and it's been down hill ever since

These are some of the things that I believed when I was a little kid:

White milk comes from white cows, chocolate milk comes from brown cows. This one is entirely my sister's fault, it's what she told me. In my defense, it had some face validity since on grandma's farm the white chickens laid white eggs and the brown chickens laid brown eggs.

When the doctor took your blood pressure he was measuring how much air you had in you. I assume this came from seeing a tire gauge being used to see how much air was in a tire.

All dogs are boys and all cats are girls. Hey, all the dogs that I knew personally were male, and all the cats that I knew personally kept having kittens.

Remember, until Sonny explained it to her, Cher thought the moon was the backside of the sun. I was not alone in my ignorance.