Reminds me of a time - my Freshman year on Northern Force (I graduated last year)
One of my classmates - another newbie at the time - was being cool and showing off and stuff, and decided to jump up and hang from the entrance door to the warehouse we were working in.
Surprise! The door was lined with sheet metal. Stuff cut right into the poor guy's fingers, and the whole ordeal didn't get much when he let go. Ended up with a nicely bandaged hand for a month or two.
Not really construction, but it does teach an interesting lesson about showing off, especially in environments like these
