I've been reading a lot of shounen manga recently and I keep seeing "知ったこっちゃねぇんだよ!" (shitta koccha nee n da yo" and I'm not all to sure what it means. I tried to convert it to non-slang Japanese to try to understand it better and got: 知ったのはこっちじゃないのよ (shitta no ha kocchi ja nai no yo), but I'm not sure if this is right, because from the context I keep seeing it in it seems to mean something along the lines of "why should I care?".
Anyone care to shed some light on it?
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