”やることやってんじゃん、このこの！” A colloquial phrase?

[tonigobe]

I recently came across this phrase that has me a bit stumped.
"やることやってんじゃん、このこの！"
(sentence found on a site... which I can't post the url to at this time :/ ... not enough points... )
With my limited knowledge, I'm guessing that it basically says/reads: "Don't be doing the things that I do"...
or perhaps more appropriately,
"Don't be doing anything that I wouldn't do."
(I hope that's correct. )
However I'm mostly not sure how to approach the phrase "このこの". (This this? You you? you kid you?)
I haven't found anything definite through Goo dictionary, nChiku, nor Google.
Can someone please assist? Many thanks in advance.

 

[Glenn]

I think it's more like "I'm doing what I do, you you!" Or maybe it's "I'm doing what I have to do". I can't say I recall seeing この used like this, though. My best guess is it's repeated to avoid a taboo, like 野郎 or 畜生 or something.

 

[tonigobe]

I appreciate your input, Glenn.
ありがとうございました！

 

[Toritoribe]

Very close, but it's more likely "You've done what you want to do/what you should do" or something along the line. It's often used in a situation bantering about the relationship between lovers.

 

[Glenn]

Ah, I had the subject wrong. Well, that's a good phrase to know.

 

[tonigobe]

Thank you very much, Toritoribe. I think I have a better understanding of that web-page now.
ありがとうございました！