One time I told my younger sister that she has an extra bladder called the "Laughing Bladder". I told her that the function of this bladder was to make her go pee every time she laughed and that it was a condition that only she had. She totally believed me and was asking my dad all about it.
A childhood belief about weeing and pooing

others believed things like this
- I totally believed my siblings when they told me the family was aliens and had a space ship in the garage.— cully
- The first time I hear about a serial killer, I laughed. You can't kill cereal. It's not alive.Anon
- I used to believe that a penis was called a bobby because my mum told me... I believed this until I was 15.— Patricia
- When I was a kid, I believed that bible school was "beauty school", and called it that all the time.— Dana
- when i was little someone told me that you died if you put make up on.
they actually believed it— SeZz - My older sister told me squirrels were poisonous, and I believed her until I was 9.— Jenni