It's happened at least once. We have a personal account from a trusted source and read that saucy little blurb from The Dallas Morning News' Alan Peppard: In April, Preston Hollow residents George W. and Lady Laura arrived fully backed by black SUVs and Secret Service to dine at the Mercury Grill. Before they even received the menu, the former first couple was met with a standing ovation from fellow diners. Should we be surprised? Probably not given the old money and silver hair that is known to populate the bar and dining floor of the Mercury, but then maybe we have it all wrong. Perhaps the applause was meant as a "Glad you're back here, and not in the White House! Woo hoo!"