I grew up in Canada so everything had english and french labels. "Best Before/Meilleur Avant" was printed on milk cartons next to the best before date. I always thought that Meilleur Avant was some kind of new and superiour milk and that the milk that we drank used to be the best until Meilleur Avant was produced. I always looked for it when when we went shopping but never found the new improved milk.
A childhood belief about milk

others believed things like this
- When we were little my sister thought if you mixed cow’s milk and water you’d get goat’s milkAnon
- that black women breastfed chocolate milk instead of white milkAnon
- I used to beleive that milk bottles were filled with milk, directly from the cow's udder.Anon
- I used to believe I could milk dogs like the cows. This was because I saw a nurse milk his cow.— Laurent and Alexis, French students in eighth grade
- I didn't believe that a cow's milk and the milk in the fridge were at all related!Anon
- I used to believe chocolate milk came from brown cows and regular milk came from black and white cowsAnon