Ever go into a party with a "Ok, if I cough 3 times, get me out of there!" to a friend? My friends and I employ a "If I throw out a righteous hair wall, I'm done with that guy'" policy. (For those that don't know, a hair wall is casually letting all of your hair fall over the side of your face on which the guy is. Sends a pretty clear "I'd rather stare into my own luscious locks than speak to you" vibe. Works every time.) Well, it shouldn't surprise us then that royalty have similar "signals".