
Well, here we are. The original. You want the story? Here it is.
Sean Connery was in a movie called
Finding Forrester. From IMDB "Plot Outline: An afro-american teen writing prodigy finds a mentor in a reclusive author." Mr. Connery utters the phrase "You're the man now dog" to encourage the young writer (Rob Brown) while he is writing. Best explained
on Wikipedia.
Why is it funny? Because things that are annoying get funny when repeated over and over and over again.
You're The Man Now Dog