There are two chess players, who have just participated in a tournament. When they head back to the hotel, they sit in the lobby for a while and discuss their day. After a while, the hotel manager comes out and asks them to go to their rooms. When asked why, he says, "I can't stand chess nuts boasting in an open foyer."
You got my hopes up... I thought it was a riddle. :-(
Good joke though. :)