A funny and somewhat related story...
Many years ago, the band I was playing with had a HUGE (for us) debut gig. We walked out on stage, plugged in, and... ONE, TWO, THREE... "STOP!". Our lead guitarist broke a string right then. Well, no matter, our front man's brother went up to tell a few jokes while he replaced the string.
The thing is, he had a hardtail Strat with the little steel cups that hold the ball (or bullet) ends, and the last time he had replaced that string, he lost the cup, so he had just put the string in the hole in the wood. Of course, (back then) when he brought the string up to pitch, the rivet on the end of the string got burrowed deeply into the wood. Now, there was no getting it out. Three of us worked on it, and the crowd grew restless. We eventually pounded an icepick into the hole to open a route for the new string, and played the gig. I'm not sure what he did about it after that.