I used to believe that when you paid the waterbill, you'd only pay for the water that went down the drain.
A childhood belief about around the house

others believed things like this
- how many us believed you would go down the drain with the bath water? I did!— Amy
- I used to think that trolls lived in my shower drain and showered with my dirty water— Troll bather
- I used to believe that you had to "buy" your job. The more money you paid, the better the job. — Duke
- That everything was free. You paid for nothing, money was just to look nice.— Blasia M
- I used to think all money paid for goods at shops went to charity.— Tim
- I thought that hydrogen was pure water (since I knew hydro- meant water) and H2O was impure some how— Hexetic