I used to think that at the age of 13 or 14 your thumb became detachable.
A childhood belief about general

others believed things like this
- I used to believe that zebras have detachable stripes.Anon
- My friend told me that if you sucked your thumb, your skin would get all mushy and your thumb would fall off.— Lauren
- I used to believe that your thumb would come off if you sucked your thumb too much— Anonymous
- I used to believe in the Cysco song "Let me see your thong" he said let me see your thumb.— Anymous
- My mom used to tell me that if I sucked my thumb, my teeth would get so bent up, they would all fall out— I dont suck my thumb anymore
- If you suck your thumb it would eventually go black, shrivel up and fall off.— Charlotte