I think it may have been breaking my ankle. In my lifetime I have knocked the wind out of myself plenty of times, wiped out on my bike and skid my knees and slammed my butt on the ground, and also flipped over on my bike to where the back tire hit me in the back of the head (hard to explain). Just recently I slid on a wet surface on my bike and my knee and lower back/butt hurt for days. It still hurts in my *** when I sneeze. Wiping out on my bike and breaking my ankle was the worst, though. The initial pain wasn't the worst pain you could experience ever. How long it lasted was what made it so bad, and it was very bad, to where I was crying. I was hesitant to go and go get looked at, so I dealt with the pain for a good deal of time and surely more than most people would. It was very swollen. Do not get wasted and ride your bike. It's not worth it. It ruined my whole summer and I didn't fully recover until early this winter.