Child abandonment can leave lasting mental scars. Just ask Kevin McAllister from "Home Alone". In a new YouTube video, Macaulay Culkin plays Kevin as an adult.

A very disturbed adult.

In the video, Macaulay is a driver for a service like Uber. He picks a guy up, then proceeds to tell him what he went through as a kid. When a man tries to carjack them, Macaulay's character Kevin turns the tables on him.

And that's when things get super dark.

( WARNING!!!   It's loaded with profanity, so if you play this... headphones or remove young impressionable ears from the room.)

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