When I was little I often saw an odd commercial where a struck match was put out with a small circular pad (Tucks medicated pads). From this I believed that these were special pads for putting out matches, which seemed quite odd but then the adult world was foreign to me then.
A childhood belief about adverts

others believed things like this
- I used to believe that when lightening struck at night, it was turning the world into day for a few seconds. — Kristine
- I heard my mum talking about foreign people, and I later asked, "have you ever been to Foreign?"— Kia
- Because of a commercial I seen on tv, I thought the whole world was the size of the of the U.S.— Paulette
- I used to believe that killer bees would take over the world by the time I was an adult.— Kristy O.
- Having seen enough red octagonal STOP signs in my time, I used to look out for green circular GO signs.— Gary
- I always thought thunder was the sound of the crumbling buildings, after lightning had struck them.Anon