When I was little my grandmother used to refer to taking a dump as 'the miseries'. I misheard this and for ages thought 'Miziwiz' was another name for poo.
A childhood belief about weeing and pooing

others believed things like this
- I used to think that when people were taking their contacts out that they were taking their eyeball out :) — Jen
- Lightning and thunder were produced at the garbage dump.— penny
- From the ages of 4-10 (I'm 10) I thought a "Cat Burgler" was a person who stole cats.— MarkoPolo5000
- A common misheard lyric in BMTH’s ‘Shadow Moses’ is “THIS IS SANDPIT TURTLE!”— Oli
- when I was little, I was scared of taking the plane because I thought clods were solid !! — valentine a french student in eigth
- When i was a between the ages 3 and 6 I used to think that the moon followed me everywhere i went.— SKAN