When I was little I saw this commercial where it was just the camera on a hospital ceiling for 30 seconds. It then says "Think that was boring? Try it for a lifetime. Don't snort". Meaning cocaine, I guess, but snorting my runny snot back up was a bad habit my mom had tried to cure me of constantly. After that commercial I was afraid it would kill my brain and I always kept a box of tissues by me so I could blow my nose instead.
A childhood belief about picking my nose

others believed things like this
- I used to think that if you didn't blow your nose and just sniffed the snot up, you head would blow up.Anon
- When I was little, I used to believe that snot was brain juice.Anon
- When I first saw a picture of the human anatomy, I thought the brain was really snot.Anon
- Because of a commercial I seen on tv, I thought the whole world was the size of the of the U.S.— Paulette
- When I was little, I used to think the commercial advertising the Mitsubishi car was actually a Mr Fishy Car.Anon
- I used to believe that spaghetti grew on trees, based on a pasta commercial from the 70s.— Dianne