That's nothin,had a friend at work tell me about how her husband was making a holster for her nephew who was a roofer.He was using a pneumatic staple gun and put it between his legs to hold it while he adjusted a roof shingle and KATOCK! stapled his jewels to his thigh.So now he has a handy dandy holster so that does not happen again.:eek
From someone who's had one through the forearm, it happens so fast you don't even feel it. Pulling it out sucks and the "glue" that holds the nail strips together burns like a mother****er lol