I think most people failed to explain what Wawa adequately because all of us who know what it is just expect everyone else to know as well. And even my explanation wasn't really "correct." The best way to find out what a Wawa is is to go to one if you are ever in the Philly area, South Jersey, Delaware, Maryland, Virginia, or parts of Florida.
Wawa is a small market with a deli that serves various foods such as hoagies, panini's, mac and cheese, mashed potatoes, chicken tenders, frozen drinks, soups, ect. They also have a wide selection of freshly brewed coffee. There are two types; regular Wawa markets and Super Wawa's. A super Wawa is a bit bigger and also has a gas station.
Oven roasted turkey on classic wheat roll, oil, cheese, bacon, lettuce, onion, pickle, and jalapeno. Depending on my mood the cheese could be cheddar, swiss, or american. I have yet to get tired of that sandwich.