Po Boys? What are they? By Mary Galbraith | August 16, 2017 - 7:49 am |August 16, 2017 Special offers for Campervan Hire Worldwide. Po Boys? What Are They? New Orleans – famous for jazz and food. Po Boys are a sandwich. The bread is French and the filling is anything delicious. For a full break down see this article here: New Orleans Po Boys.The Story. Share this: Tagged USA New Orleans. Bookmark the permalink.