I thought the blue veins in some cheeses were actually blood vessesls!
A childhood belief about general

others believed things like this
- my aunt used to have an imaginary friend who instead of having blood had 7-up in her veins.Anon
- I used to think that blood was blue until it touched air.— paetrw
- when I was young, I heard that blood had iron in it. I thought blood was red because it was rusty.— Hunter
- You know the eifel65 song "Im blue da be da ba di"
I thought he said "I'm blue I'm in need of a guy"— Anna - Eifel 65 - Blue
I'm Blue (if I was green I would die...)
[I'm blue, da ba dee, da ba di.]— Matt - I used to be afraid of moving my wrists incase i snapped my veins and bled to death.— Tender veins