Burger?

Hit a mcDs drive thru to get a quick lunch. “One fish sandwich”, I say. “We don’t sell sandwiches”, comes the reply. Several iterations of that conversation follows until I get the window and gal informs me that they don’t sell fish sandwiches they sell fish burgers. Next to her window is a large photo of mcD’s “Filet-O-Fish”. I confirm that a fish “burger” is what is shown in said photo and order same. Ugh.