I used to believe that when you swallowed gum. All of the gum you swallowed before would stay in your stomach and turn into a giant ball of gum. Eventually becoming too big, causing your stomach to burst.
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
- i used to believe that if i swallowed beens,,a tree would grow in my stomach :P— fatma
- i used to believe that if you swallowed gum, when you breathed in, your stomach would stick to your back— cope
- I thought that if I swallowed grapestones, a tree would grow out from my stomach. — Tone
- I used to believe that if you swallowed watermelon seeds, they would dance around in your stomach at night.— jaalyn
- I used to believe that if you swallowed cherry pits, you would have a tree growing in your stomach.— porkchop