When I was 5 or so, my much-older brother convinced me that if you ate the core of an apple and swallowed the pips, a tree would grow in your belly and grow out of your belly-button.
Needless to say I was always sure to throw the pips away.
A childhood belief about general

others believed things like this
- I used to believe that if you swallowed an apple seed, a tree would grow in your belly.— Rachel
- I used to believe that if you ate the pips in apples a tree would grow inside your stomach.— QueenB
- My Mom used to tell me if I swallowed an apple seed I would grow an apple tree inside my stomach!— Marg
- If you swallowed a watermelon seed it would grow in your belly— Rachelle
- We were told at school by the evil dinner ladies that apple pips contained arsenic.....Anon
- When I was a kid, I used to bellieve that when I eat an apple pip an apple tree would grow up in my stomach!Anon