The Whopper has been at the center of several hoaxes and pranks from the company. In a 1998 April Fool's Day prank, Burger King took out a full page advertisement in several national publications such as "USA Today" advertising a new version of the sandwich called the "Left-Handed Whopper". The advertisement claimed that the condiments were all rotated 180° to accommodate southpaws. Another prank from 2013 claimed that the company was introducing a "hands-free Whopper holder" to allow people to eat the sandwich while doing other activities. The unit, similar to a harmonica holder, was supposed to be introduced in Puerto Rico to celebrate the company's 50th anniversary. It was later revealed to be a joke. A 2007 advertising campaign celebrating the golden anniversary of the Whopper showed real customers in Las Vegas reacting to the false news the Whopper has been discontinued. While it was not permanently discontinued, the ad claims it was discontinued for one day. Later versions of the ads had customers receiving a Big Mac or Wendy's Single and their reactions to the sandwich. In-store ads, such as posters and tray-liners, attack the size and quality of the Big Mac. The campaign won the 2009 Effie Award as one of the best restaurant advertising promotions for 2007–2008.