Look at what happened to me today!
Sarge and I were done with our workout today (hang power cleans. My max load 65lbs! WOOT!) and were messing around wasting time. I'm determined to be able to do a pull-up some day. Seriously, I can't do even one. It's pretty pathetic. He was showing me how to swing to work my way up to a pull-up. Suddenly RIIIP!!! OW! MAN! I have been working on building up that callus for some time now.
Dang it! Now I have to be a lame-o and wear a glove on that hand for about a week.