When I was little, my mother told me that she would swap me for another little boy every time I 'misbehaved', I always had this mental image of a supermarket-like store which sold children.
A childhood belief about family

others believed things like this
- for some time I used to think that at a drug store people really sold drugs.— NEO_ryu
- When I was little I thought "Pencilvania" was a huge store that sold pencils and nothing but pencils.— Tim
- My grandma told me that if I misbehaved, the men in the garbage truck would take me away forever.— Anika
- My mother told me that ice cream vans were ambulances for little children.— Buzz
- Because "transmogrify" has "mog" in it, I thought it meant "to swap cats".Anon
- When my brother was 5 I use to swap a $5.00 note for lots of coins because he thought that I had more money— MATT NEWTON