When I was 3 or 4 my older sister would always press the correct bump on the top of fast food drink lids (Coke, Diet, Other) to mark which was hers. When I asked her what she did it for, she told me some bumps made the straw harder to drink out of. Everytime I pressed mine down she told me it was the wrong one, but someday I would get it right.
A childhood belief about drinks

others believed things like this
- I used to think that if you mixed a diet drink with a regular drink, it would explode. Anon
- My older brother told me that speed bumps were really dead people covered in cement.— Trina
- My friend told me you have to drink milk to get boobs LOOL— Roxanne
- i used to believe the proverbial "straw that broke the camels back" was a drinking straw. sadly, i was 23. — jennie kay
- My older brother told me that everytime you sneezed your lungs would bleed. I believed this until I was 21!— Gem
- I use to believe that if you told a story/lie you would get a bump on your tongue.Anon