My sister used to tell me that if I cracked my knuckles, then I would have fat knuckles when I grew up. It never stopped me though, and ironically, my knuckles are skinnier than hers!
A childhood belief about general

others believed things like this
- I used to believe that Knuckles (from Sonic the Hedgehog) was an enchilada.Anon
- Ironically my parents were born on the same day; so growing up, I thought all parents had the same birthdays. Anon
- My sister used to believe that chickens grew from the ground.Anon
- I used to believe that when you cracked a mirror your reflection would come and take over your body!— XxXAbbeyXxX
- My sister was convinced that when she grew up she was going to have puppies instead of babies— leohauoli
- My older sister had me convinced that noodles grew on trees, but that rice was man-made...— Trusting little brother