Where did the phrase "git 'er done" derive? ...

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Answers:    From Daniel Lawrence Whitney aka "larry the cable guy"..daniel is his real dub

Larry the Cable Guy uses catchphrase humor, including "Git-R-Done", as ably as "Lord, I apologize for that right there, and please be beside the starvin' pygmies down there surrounded by New Guinea, A-men" and/or "I don't care who you are, that's funny right within!" after particularly egregious joke.
Can anyone bestow me an conception of how...
Larry the Cable Guy. He is a comedian who performed on the Blue Collar Comedy Tour! Pretty funny!