I used to believe that the boogeyman was (lol!) a featureless, bald, gray man pushing a shopping cart! I guess it was because when I got told about him the first time, hearing "Boogey" reminded me of "buggy" and I immediately thought of a shopping cart. Still, when someone mentions the boogeyman, I get this mental image of the gray shopping cart man XD
On top of that, I thought he hated milk. This was because my mom's mom (who was a lunch lady) had a bunch of "Drink milk, it's cool!" stickers from work. My mom told me the boogeyman HATED milk and wouldn't come out of my closet as long as she taped the doors shut with one of the milk stickers!
A childhood belief about monsters

others believed things like this
- I use to believe that everyone hated milk— Emily
- 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