I grew up on the family farm and when I was very little - like 5 - I sneezed. My uncle told me every time I sneezed I lost brain fluid out of my nose and I needed brain fluid for my brain to work. I was terrified if I lost too much brain fluid, I'd be stupid. Which explained why old folks forgot things.
I sneezed with my nose pinched closed for years. Ouch!
A childhood belief about general

others believed things like this
- My brother used to tell me if I picked my nose I would become more stupid because bogey were brain cellsAnon
- i was always told if i picked my nose my brain would fall out! i belived it for years!Anon
- my mom told not to pick my nose because if i fell i would poke my brain.— brent
- My Gran told me that if I picked my nose, I´d get brain cancer. Traumatised? Yes I was!— Windy Girl
- i used to believe that if you picked
your nose your brain would cave in...— mr bogtrotter - when i was little my mum used to tell me if i picked my nose too much my brain would fall out!!! think it did— Maz