I've only ever thought about it once. The guy was running the clock in a rural school. He let a few seconds run off after the whistle and I since I had looked at the clock, I requested that he put the proper time back on. He took serious offence at that. I assured him at halftime that it was not my intention to embarras him, and he was unwilling to make nice about it. And I thought country folk were supposed to be so friendly
. If we had had a problem with him the second half, I would have probably dismissed him. But the it went smoothly from there on out.
Come to find out, he's the brother of a really great guy in my association. Go figure.