I was first learning to ride a bike and I was going down a hill, and i lost balance bike fell to the right side and i was still going like 25 mph and the entire side of my right leg (the skin that was facing the ground was skinned off, I was then rushed to the hospital and they patched it up. 1 month later I tried riding a bike and finally got it.
Ripped all the skin and flesh off my fingertip with a soup can when I was three. . .my fingertip is still puffy from the synthetic tissue, the stitches are still there, I have no feeling on that part of my finger, and it was painful enough that I was delusional before the surgery :/