On our way to down to miami for our cruise, we stopped at this little local bbq place in ridgeland, sc called dukes.
you can order from the menu or enjoy all you can eat bbq from their buffet set up. $11 includes tax and drink (tea or lemonade). their bathroom had this sign in their restroom. this is definitely a locals favorite. walk up to the window and order or proceed down the counter and fill up your personal trough (aka styrofoam plate), with bbq, beans, mac and cheese, slaw, hush puppies, fried chicken and fried fish.
the little room off the kitchen is decorated with multiple pictures of john wayne if that gives you an idea of what to expect.