My brother and I used to believe that lobster tails were poisonous to eat if you were under 18 years of age. We grew up in Maine and my dad would get our loster tails whenever we ate lobster for dinner. The plot was revealed when we had lobster at a friend's house and the parents were confused upon receiving our lobster tails.
A childhood belief about general

others believed things like this
- I used to believe that peanut butter was lobster poo.— PaulH(nz)
- I thought a Monkey was just a baby Gorilla and when they grew up their Tails fell off!— Brainhead
- That hot dogs were made from rat tails.Anon
- When i was little, i thought dogs poop from their tails.Anon
- When I was little, I used to believe that wind was caused by whales flapping their tails way out in the ocean.— Nanohawk
- I used to believe that waves were made by whales who lined up in a row and flapped their tails.— Passionola