My experience was more funny/embarassing than painful. It was at an outdoor field, there used to be a tree farm on it at one point. There were lots of trees and lots of tree holes. Tree holes are generally 1.5 to 2 feet deep by 1.5 to 3 feet wide, it's what's left in the ground when you dig up a smallish tree.
Anyhow, the place was overgrown. Grass and scrub up to your waist in lots of places. There were two things we had to take from the enemy base back to our base. I grabbed one (a makeshift flag on a pole) and someone else grabbed the other (ancient laptop) and we bee-lined it for our base at top speed, single file. Through some of that waist-high scrub I stepped into a tree hole and went down hard and fast. Anyone watching us would have seen two guys running, and then one of them suddenly disappear. It must have looked extra funny with the flag in hand. The other guy didn't even notice until about 10 seconds later when he looked back and I was just gone.
Long story short, I was very lucky that I didn't end up with a knee that bends in the opposite direction.
If everyone fried their food, there would be no war.