When I believed that if you swallowed too much gum, then a gum tree will form in your stomach. Once it gets too many leaves, you explode.
A childhood belief about chewing gum

others believed things like this
- my mom made me believe that if i swallowed my chewing gum, it would form one big wad in my stomach.— mimi
- If you swallowed chewing gum it would make a balloon inside you and your stomach would explodeAnon
- i used to believe that if i swallowed beens,,a tree would grow in my stomach :P— fatma
- I thought that if I swallowed grapestones, a tree would grow out from my stomach. — Tone
- I used to believe that if you swallowed cherry pits, you would have a tree growing in your stomach.— porkchop
- My Mom used to tell me if I swallowed an apple seed I would grow an apple tree inside my stomach!— Marg