I convinced my sister when she was about 7 that pressing on a bruise made it heal faster. I told her if it hurts that's how you know it's working. Then I silently laughed while she winced while doing it.
A childhood belief about lies

others believed things like this
- My sister convinced me that tapioca was made with fish eyeballs.— Eileen
- My older sister had me convinced that noodles grew on trees, but that rice was man-made...— Trusting little brother
- I convinced my sister that chocolate milk was made out of Keebler cookie elves, she believed me for a month— Rainbow Steel
- i used to believe that the "fast lane" actually had some sort of tracks on it that made you go faster.— erin
- i didn't beleive this, but a kid my sister knew thought if he screamed in a really high voice, he ran faster.Anon
- I used to believe that there was special metal laid in the motorways that made the cars go faster!!— angela