The Chicken McNugget, and it’s actual contents, has been shrouded in mystery for years. Once thought to consist of various and somewhat questionable chicken parts, and perhaps even a mysterious pink goo.
Now explained as a genetically engineered creature called the macnugeta repulsiva. The small slime-dwelling rodent is eventually battered, deep-fried, and served with choice of dipping sauce. This finally explains the uncanny consistency in shape. And the taste.

Come to think of it, McNuggets always did have a hint of purple felt.
It was always my opinion that Grimace was a McNugget.