Somehow I was raised washing my hands in cold water, even though today my parents use warm. I used to believe that most people used cold, and that using warm water made you a weirdo. I finally realized the truth on a sixth grade field trip, but I still get very irritated when the water in public restrooms comes out hot at first courtesy of the "weirdo" :) who used the sink before me.
A childhood belief about bathrooms

others believed things like this
- I didn't think you could put out a fire with hot water - only cold water would do.— Katti Pytt
- I used to believe that hot water was red and cold water was blue.Anon
- I used to think that Luke-Warm water had somthing to do with Luke SkywalkerAnon
- 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