When I was a child, I used to be very careful when brushing my teeth because I thought the water that went down the drain came back up throught the faucet and therefore, there was a limited supply that could run out.
A childhood belief about bathrooms

others believed things like this
- Until I was about 8 I believed that your back teeth keep growing in until you have a full circle of teeth.Anon
- 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
- When I was a child i used to believe that the lazy little mouse took our teeth to put them on— anonimousss
- Until I was around 8 or 9 years old, I thought dentists took your teeth out and replaced them with new teeth.— Verapamilo
- As a child I was taught that the tooth fairy would buy our teeth so she could add them to her crown.— Lola