“Then he said that anyone who wanted to use his mug was free to do so.”
So how did that work out for him?
Did that limit his chances for promotion?
Did he live happily ever after?
He was an older guy who was a driver. He had no desire or chance of becoming an officer before retiring. I wasn't in the group he pulled his stunt in front of, but it happened while I was employed by the fire department. There is a saying telegraph, telephone, tell a fireman. There was no one on the department who hadn't heard about it by the next day. He didn't get in any serous trouble and no one ever used his mug again. So I guess you could say he lived happily ever after.