When I was little, I thought Abraham Lincoln had a tail. Made sense at the time, considering that every time you had to make a decision, you'd toss a penny and call "Heads or tails!" and on one side of the penny you see Lincoln's head. I assumed that the picture on the other side was his tail. By extension I assumed that all presidents had tails and it was some sort of prerequisite.
A childhood belief about politics

others believed things like this
- I used to believe that God looked exactly like the picture of Abraham Lincoln on an American penny.— Leah
- That hot dogs were made from rat tails.Anon
- I used to believe that waves were made by whales who lined up in a row and flapped their tails.— Passionola
- When i was little, i thought dogs poop from their tails.Anon
- I used to believe because I was born I Abe Lincoln's birthday I had a better shot at being President.— END
- I thought a Monkey was just a baby Gorilla and when they grew up their Tails fell off!— Brainhead