Growing up in a kosher household, I somehow got the idea that if you touched blood your hand would shrivel up and fall off, following an incident in year 7 science involving half a kidney and a pair of tweezers I realised it didn't go quite that far.
A childhood belief about general

others believed things like this
- If you suck your thumb it would eventually go black, shrivel up and fall off.— Charlotte
- I used to think that blood was blue until it touched air.— paetrw
- I thought pink wafer biscuits would bite me if I touched them. Absolutely no idea why.Anon
- My sister uesd to think that you did a whole year's worth of growing in the night before your birthday.— Richard Davies
- I used to beleive that if you swolled a tablet whole you would get kidney stones— kaye
- When I was a little kid and fell down and skin my knee, I used to think I was skinning my kidney.— G. Dedrick