Did something stupid one time while fly fishing surf for stripers. Caught my back cast on some rocks 20 yards behind me. Fishing was hot at the time so after freeing my clouser, rather than toss my line into my stripping basket as I was walking back down to the water I started a bunch of short casts. Accidentally stepped on slack as I was commencing one backcast and had my clouser screaming back at me, burying into my ring finger (fortunately nothing else). Since there was no brutal burning, I figured I had not hit a nerve, grabbed my pliers and gave her a good tug then placed my stripping guard over the wound to help it clot to get back at it as quickly as possible.
Fortunately no damage other than a little blood loss - got lucky; never again, and this story will be a learning lesson for my son when he's of age.