What's your "damn, I must have broken something" story, to then realize / remember your are strong-boned ?

Mine is wild, it's still clear in my mind.

I was around 8 - 10 years old, biking in the forest with my cousin. There was this place where there were 3 slopes of various sizes and inclinations. The biggest one was for the big boys, and of course, at some point, we just decided to try it.

As I made my way down the slope, I remember realizing that I was maybe going a little too fast to properly control my trajectory. That's when a bump literally threw me off my bike. I was flying above the ground, and I could see the bike following me in it's unstoppable course without a rider.

A tree stop my desastrous adventure. My back hit the tree, folding me in two like a napkin. I remember thinking my spine was broken, it was intense. Then I fell on the ground.

10 seconds later, I was standing up and laughing with my cousin. My shin was bleeding, I still don't know why, but that was my only injury.

Later that night, I was thanking the Almighty God of Unbroken Bones.

What's your story ?