I always thought that gas was black and slimy like heavily used oil (maybe because of cartoons). I was so convinced of this that the first time I pumped a car full of gas as a teenager and saw what came out, I thought they were trying to rip me off by watering it down!
A childhood belief about cars

others believed things like this
- I thought the Boogie Man was made of boogers-all green and slimy.— Boo
- I similarly thought that "Proud Mary" included the lyrics "pumped a lot of tanks down in New Orleans."— Larry
- Before I went to a planetarium for the first time, I thought it was just a room full of plants. Anon
- I thought your loins were kidneys, and nobody corrected me until I was a teenagerAnon
- I use to believe that your hair grew because you wash i.e like watering a plant — HJON
- I used to believe that if I pumped in my sleep and breathed it in I would turn into a rotting turnip!— Quako