Our primary school playground had a 12 foot wire fence at the end, presumably to stop wayward footballs flying onto the adjoining road.
One snowy winter morning we spent our entire break time perfecting the best possible slide, using the fence as a safety net/crash barrier. Everyone was having a fantastic time.
The headmaster thought otherwise and instructed the janitor to put salt down between break time and lunchtime, but never thought to mention it to the children.
We all rushed out at lunchtime to continue our sliding activities. First kid down hit the salted patch, went face first into the fence and broke his arm.
Dickhead of a headmaster tried to put the blame on us.