When travelling from the farm to the city or whatever in my younger days, I'd see the sign that read 'do not drive on shoulder' and I thought when the man was driving, the lady next to him could not put her head on his shoulder. Nobody told me, I figured it out many many years later.
Duhhh!!
A childhood belief about cars

others believed things like this
- When we were younger my sister and I used to think that our shoulder blades were really sprouting wings.— Raven
- At the age of about 5, I thought that any man carrying a bag/sack over his shoulder was a burglar.— Police officer, Ola.
- I used to think that the shoulder blades were actually "back breasts".— Kdees
- I used to call the shoulder of the road, the elbow.Anon
- I thought the no overtaking sign meant that red cars cannot drive by black cars.— Helen
- A billboard sign read: Moonshine kills.
I thought being caught outside by the moon would kill me. Humph.Anon