I had an incident at Alrewas when we moored on the visitor moorings near to the river lock. A boater was on the waterpoint, which was further away from the lock than where we were moored, but at the same time we both left our moorings. The lady on the boat obviously thought we were trying the race them to the lock, then proceeded to tell us (using a few choice words) what she thought of us. Anyway, I told her I was sorry if I had upset her and she was quite welcome to use the lock before me. I think she was quite surprised by this offer, didn't really know what to say, screamed a little more and said we should have the lock as we obviously wanted it more. Anyway, I'm not one for confrontation, so I pulled in and let them think they were snatching the lock from me, just so I didn't have to put up with her chirping in my ear as we worked through the lock.
I'm not sure why some people feel like they have to get this angry about small things, it just spoils the day for everyone.