When I was little I used to love having a bath, and would quite happily spend hours in there. Obviously fed up of this my mum told me that when my fingers wrinkled up, it meant I had to get out of the bath straight away. I accepted this without question.
I completely believed this until I was (shamefully) about 14 when my mum questioned why I had taken such a quick bath. My reply was "my hands were wrinkled..."
oh how she laughed...
A childhood belief about bathrooms

others believed things like this
- I used to think that when I was in the bath I shark lived under the bath and that ig might come up and bite me— ------------
- Whenever my fingers wrinkled from staying in the pool too long, I thought I was aging faster.— The Mortal Elf
- I used to think that if you take the plug out of the bath it will suck you into the bath— awesome kid
- how many us believed you would go down the drain with the bath water? I did!— Amy
- I used to believe if you stayed in water too long your skin would get really wrinkled and stay that way.Anon
- My uncle told me that if I didn't wash my ears when I took a bath, corn would start going out of them.— Ebod