Po'boy is a popular sandwich in Louisiana that typically consists of meat or seafood served on a long roll. It's a staple in Louisiana cuisine, but it might be called by a different name depending on where you are in the United States. Some synonyms for po'boy include submarine sandwich, hero, grinder, and hoagie. In some regions, it might also be referred to as a blimpie or torpedo. No matter what it's called, the po'boy is a delicious and filling sandwich that is perfect for a quick and satisfying meal. So, whether you're in Louisiana or another region, grab a po'boy and enjoy!