when about 7 or 8 we were told that if you thought really hard about 2 things at the same time your brain would explode, this was by a teacher as well
A childhood belief about teachers

others believed things like this
- I used to believe that if I threw up too hard my brain would explode.— Tammy
- I thought my brain would explode if it was in the sun too long— Heather
- My brother once told me that if you burp and fart at the same time, you'd explode— Aubrey
- I used to believe that you would explode if you drank cola and ate pop rocks at the same time.Anon
- my mom told me that if i held in too many farts, i would explode. i took it seriously.— ginger
- My dad always told me to never hold my sneeze and if I did, then my head will explode.— anon.