When I was little I always wondered why the water at McDonald's tasted so strange. My dad told me that it's because McDonalds used old dishwater.
For years I pictured McDonald's employees, mad that I didn't buy a soda, scooping up used water out of a dishwasher.
(Now I know it's because the water comes out of the same tap as pop.)
A childhood belief about drinks

others believed things like this
- I thought tonic water was toxic water and wondered why would anyone drink it if it is toxic?— Dr.Badguy
- I didn't think you could put out a fire with hot water - only cold water would do.— Katti Pytt
- I thought that hydrogen was pure water (since I knew hydro- meant water) and H2O was impure some how— Hexetic
- I used to believe that if i splashed water on the wall during a bath, the water would turn into spiders— justin
- that bathroom tap water was recycled "potty" water from the toliet. — livingdeadgirl
- ***I used to believe that water towers was a place that someone lived and they controlled the water.— C H R I S T E N