So what would you do?
There you are in a plush London hotel interviewing Russell Crowe about his latest film - a Hollywood remake of Robin Hood set in Yorkshire.
Among other things, you suggest that the mega-star - who has been known to fly off the handle now and again - might not quite have captured the Yorkshire accent of Michael Parkinson, on whom his speech for the film was apparently based.
You caught a hint of Irish, in fact.
Do you say so? Do you press the point? How aggressive/defensive can you afford to sound? I mean, for all sorts of reasons, you don't want to get on the wrong side of Mr Crowe.
Take a listen here on the Front Row website to how Mark Lawson handled it. Or if you want to hear just the crucial clip, take a listen to the Today programme item ... that involved the redoubtable Evan Davis learning to speak like William Hague.
And then think about what you'd do.
