I used to believe that if anyone got pricked by a pin/needle, the metal would go straight through their blood to their heart, and they'd die immediately.
A childhood belief about being ill

others believed things like this
- I used to believe that Metal music was when a bunch of people would bang metal together to make noise. Ha ha.— Kassandra
- The song called heart of glass mixed me up as a kid. I heard "Heart and ass". — oops
- I used to think making straight A's in school was literally writing A's straight. Anon
- I used to think that when people had heart attacks someone came and stabbed their heartAnon
- when I was young, I heard that blood had iron in it. I thought blood was red because it was rusty.— Hunter
- I used to think that if you eat pig heart, you could grow another heart and be twice as healthier. Anon