If you bit the end of a pen of pencil you would be poisoned by the lead or ink.
A childhood belief about being ill

others believed things like this
- i was told that if you got stabbed with a pencil (by yourself or others) you would get lead poisoning.— waiting to die
- As a kid I used to believe that when you sharpened your pencil, the eraser on the pencil grew.Anon
- I used to believe hampsters were miniature kittens and that when they bit me i would be poisoned.— Dylan McDonald
- I used to think that Serial killers were people who poisoned cheerios.— Ashley
- I believed serial killers were people who poisoned cereal to kill others.— Matthew
- I used to believe that Prince was the lead singer of Queen— Garrett