I guess playing ready golf, like others have said. But it depends on the crowd. At my home club we play sensible ready golf, but several days ago I was playing with a lady and her husband at a different course, and she chastised me for playing out of turn (ahead of her). The the first time I thought she was kidding, but the second time I knew she was serious. So, I dropped ready golf for the rest of that round.
I know this is off topic, but in my view the rudest thing others do is to provide unsolicited "advice." I still haven't learned how to deal with that very well.