When I was in my twenties, I went to the emergency room when I hurt my hand. I had been trying those spins you see in westerns with my six inch Luger. I made the intern write down the injury as 'gunslinger finger'.
Today I woke up and my arm and shoulder was really sore, and I couldn't figure out what I did. Rode my horse. Shot my new Springfield .45. Nothing I haven't done before. And then I remembered...
I cleaned the Springfield! It took forever for me to get the slide to go back and stay put.
That stupid slide has given me Gun Cleaning Arm!!!