I don't think it was a mistake. I stopped drinking in the Grapes because, quite frankly, coarse language seemed to be expected of you! I have found the Sun to be the same, although have not been there for a while. The Black Bull I can't comment on, the Tavern these days is rife with it, the Blue Bell seems to have always been a place to take your mouth before washing it out and the Wharton has its fair share, too. I drink regularly in the Red Lion now and, despite Wetherspoons policy and promises, it is far from unusual to hear fould and offensive language as a matter of course. It's not necessary, not clever, and not funny.