WASHINGTON — If you've worked in the food service industry, you've probably heard and seen it all."The vice president and I have lunch once a week, and I'm going to order from a small business right now," Biden said in a social media post before calling Ghostburger.The White House wanted to include Ghostburger in a video showcasing small businesses, and the owners of the restaurant decided to surprise hard-working Brittany with taking the president's call."It's pretty good," is all the stunned Brittany could say while talking to the leader of the free world.The social media video ended with Biden taking the Ghostburger order out of its bag and serving the vice president her lunch."