They’re not lovin’ it. Fast food mega-chain McDonald’s is facing a proposed class-action lawsuit focused on the authenticity of its McRib sandwich and what it’s made of. The complaint, filed in the U.

McDonald's is the target of a class-action lawsuit claiming the fast-food giant is lying about what's in a McRib.

McDonald's is now the blueprint for the fast food model, but its founders didn't figure it out right away. You won't believe ...