Definition:
The phrase "real McCoy" is an informal expression used to describe something that is genuine or authentic, not a fake or imitation.
In more advanced contexts, you might find "real McCoy" used in discussions about luxury items, authenticity in art, or when distinguishing between original products and counterfeits.
There are no specific phrasal verbs that are directly linked to "real McCoy," but you might encounter phrases like "pass off as" when discussing fakes.
In summary, "real McCoy" is a useful and colorful way to assert that something is genuine.