The sentence: 悪い、拳 当たったよな リキっちまって…

In Oshi No Ko anime there's a scene where a guy punches the MC with force,
despite it being supposed to be an act. I know that リキ here refers to the
force/power, but where does the ちまって in 「リキっちまって」come from? is it a
contraction of 行っちまって?
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2023-05-08T12:25:44.707
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2023-05-08T13:21:42.173
2023-05-08T13:21:42.173
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question
colloquial-language anime
「リキっちまって」What is っちまって suposed to mean here?
It sounds like a form of リキる, contraction of リキってしまって→リキっちまって, but I'm not
sure that's a common word even as a slang. I would guess the meaning is the
same as [力む](https://dictionary.goo.ne.jp/word/%E5%8A%9B%E3%82%80/) - exerting
extra/unnecessary force.

(If it was リキむ instead, the same form would be リキんじまって.)
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2023-05-08T13:19:41.047
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2023-05-08T13:19:41.047
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answer