A childhood belief about in the street

When I was a kid there was a building site behind our house where they were building some new houses, and naturally us neighbourhood kids would use it for playing soldiers, and climbing on the scaffolding and throwing bricks and planks at each other. The usual stuff.

However, one day I was sat on one of the earthmovers, pretending to drive it when my father saw me and carted me into the house, and proceeded to tell me not to go onto the lorries and diggers, as you needed special leather trousers. If you sat on the seats without these special leather trousers, then if the digger started up, the vibrations would shake all your insides out of your bum.

Damn, I was scared, so I never went on the building site again. Mental scarring, or what!!