My cousin used to think that putting his thumb up was like giving someone the finger so he always would always put up his thumb when he got mad at someone. Also he used to think the "stuff" in his groin area were called peanuts.
A childhood belief about swearing

others believed things like this
- 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
- In old west lore, Billy the Kid was called 'buck toothed'. I thought this was because he sucked his thumb. — Monty
- 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