This guy wasn't the worst ever, but it resulted in a painful round that wasn't concluded.
I had an older fellow who seemed to think he was a crack shot. As we waited on the second tee (a par 5), he explained to me that he can regularly hit over 300 yards. Another older guy holed out on one and bellowed "what's the hold up? Who do you think you are? Superman?". Needless to say, my guy didn't come close to hitting 300 all day. We were actually hacking it up about the same. I was just a lot faster doing it than he was.
Five hours later I had to leave on the 14th hole as dinner waits for no man.
Was there anyone in front of you? 5 hours for 13 and a half holes sounds pretty outrageous even by So. Cal. standards.