I play with 'this guy' regularly and its just so annoying. Watching a guy b*tch and moan his way around the course and then shooting his handicap falls on deaf ears. If you are an 18 handicap and you shoot like an 18 handicap just relax and enjoy it instead of acting like you are a scratch golfer.
I played with a guy like this the other day. He was a long hitter, and therefore, thought that meant he was a good golfer. Of course like many long hitters, he often had no idea where the ball was going to go. So he spent the entire hitting into trouble, failing to get out of trouble well, and generally just making a mess of it. On every shot he slammed his club and cussed. I wanted so badly to say, "Dude...you're not the golfer you think you are." But of course I didn't. (I'm not the golfer I imagine either, but I try to keep a good mood and not get frustrated.)