When I was 4, I met a crusty old man who sported half an index finger on one hand. Naturally I asked how he had lost half of that finger. He told me it was from picking his nose, that the boogers had eaten it right off. This sufficiently frightened me for years enough so that I couldn't even deal with my nose in any capacity, believing that it bore toxins similar to those contained in hydrochloric acid.
A childhood belief about picking my nose

others believed things like this
- Picking your nose and eating it. Hey! Tastes like chicken and only half the calories— Henry the Seventh
- I used to believe that a half moon was gods finger nail, and his finger was pointing downwards.— clo
- My mother used ot tell me that if I picked my nose the 'Nose Spider' would bite my finger off.— Melanie
- My mom told me that if I picked my nose, my finger would stay there someday!!— baxter
- my grandpa told me if you pick your nose too far then a snail will bite your finger off haAnon
- I used to believe that if you picked your nose far up enough, a snail at the top would bite your finger.— Jenny