My mum told me not to lick a knife. I, naturally, asked why, and she replied that I might cut my tongue otherwise. And still to this day, whenever I lick knives, I never lick the cutting edge, only the side. Only much later did I learn it was apparently bad manners to do so regardless of which side you lick. Obviously she should have explained it that way instead of trying to be clever ;)
A childhood belief about around the house

others believed things like this
- When i was 5, i thought that you could lick your elbow....Anon
- I used to believe that a cow-lick meant that a cow had licked you when you were a baby.— Lindsay
- My mate used to believe that the lids of yoghurt pots were poisonous, and to this day won't ever lick one.Anon
- I believed if I let my dog lick my face and didn't wipe off the slobber, that I would turn into a dog myself.— robyn
- I was told that if you sleep on your back you swallow your tongue...I have been sleeping on my side ever since— scotty la
- I used to believe that when you died no matter what your tongue hung out the side of your mouth. Anon