When I was little, about 7, (I'm 15 now) my brother who was 13 at the time, (20 now) told me that if I ever went into his room he'd poke my belly button and I'd deflate like a balloon on the spot. I had been brave and poked it myself, but after going to him and telling him he was lying he said "only big brothers can do it".
A childhood belief about belly buttons

others believed things like this
- I used to believe that if I poked my grandfather in the belly-button he would spit out quarters. — Justin
- i used to believe that if you poked yerr belly button yerr butt would fall off.— jordy
- My older brother used to tell me that if I "untied" it, I'd fly around the room like a balloon. — Gullible youth
- I used to think that if i touched my belly button it would unfold and my belly would be inside out forever. Anon
- When I was a kid my dad told me that if you unscrewed your belly button your bum would fall off.— Ann
- I was told that your belly button is where you put salt when you eat apples in bed.— Shurnuff