When i was young we had a toilet that didn't flush very well and my mum always told me to take a saucepan up there with me when I complained about it not working.
She meant that I should fill it with water and throw the water in the pan as I flushed to help. I didn't know this and for years used the handle to mash my number twos round the u-bend before returning the saucepan to the kitchen cupboard ready for dinner . . .
Nowadays there is always an empty vase in the bathroom to avoid any mis-understanding.
A childhood belief about general

others believed things like this
- I used to believe that if I flushed the toilet before I showered, I would take a shower in dirty toilet water.— Chris D
- I used to beleive that if you flushed the toilet that it would explode and all the water would shoot out.— Michelle
- I didn't think you could put out a fire with hot water - only cold water would do.— Katti Pytt
- that bathroom tap water was recycled "potty" water from the toliet. — livingdeadgirl
- I thought that hydrogen was pure water (since I knew hydro- meant water) and H2O was impure some how— Hexetic
- I used to think that when the power goes out, the water also stops working.Anon