Got my leg stuck in the bars of one, back in Junior Primary. The whole middle school came out to laugh at me.
Another time. Playing It-chasey on the playground, I tried running down the slippery dip and bellyflopped on the edge of the sand pit. Broke a couple of ribs.
That playground racked up a number of casualties over the years. Yet the teachers never once tried to stop us playing on it. 😅