When she's ready to wrap it up, but not necessarily royally bored or annoyed, she'll switch her purse from one arm to another. If she really wants out, she'll do something more dramatic, like placing her bag on the floor or spinning a ring on her finger. And when she takes meetings at Buckingham Palace, there's a discreet buzzer she can ring to have guests escorted out. Maybe this is what Kate Middleton's learning in princess training?
There are rumors that Prince Charles plays with his cuff links to signal he's done, but nobody's sure if it's that or a nervous tick. As for Princes William and Harry? It's too early to tell, but all this passivity makes me yearn for the good ole days — when royalty could be indiscriminately rude.