My grandfather told me that if a cat wasn't pure breed, the tail would fall of if you lifted the cat after it... Guess who paniced when he lifted the cat next-door...I knew that he was a many-mixed cat!!!
But it came came to an happy end, even though I was pretty upset with my grandfather for some hours ;)
A childhood belief about cats and dogs

others believed things like this
- I used to think that boy's lifted the toilet seat to pee because their asses were too big.— sydo
- my grandfather told me that soy sauce was bug juice.Anon
- When I was small my Grandfather told me that the reason I had freckles was from throwing pebbles in the sewer!— All Grown Up Now!
- When i was little, i thought Santa Claus was my grandfather— Junie
- I used to belive that sometimes my grandfather drew the clouds for me. Anon
- I used to believe that if I poked my grandfather in the belly-button he would spit out quarters. — Justin