Despite being known for its classic Big Mac (which it didn't fully invent, by the way), McNuggets, and Happy Meals, there's one item on McDonald's menu that outsells the rest and it's none of the ...

While the iconic McRib has caused quite the stir in recent years and the Snack Wrap will make its way back into our patient stomachs prettys oon, the true best-selling item is one that wasn't sold ...