In a world of novel-length menus and menuboards that fill entire walls, Flippin’ Pizza stands out for the simplicity of its offerings. Customers choose their sauce preference: white or red. There’s only one crust option, and whole pies come in an 18-inch size only. Pizza can be ordered by the slice, and the adventurous eater can get a calzone or a salad. But that’s the extent of it. And that’s the way founder Patrick Farley likes it.