Her little deal with Brad just might blow up in her face.

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This experiment could easily blow up in everybody's face.

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The plan could succeed brilliantly. It could also blow up in everyones
face and be terrible too

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Will the linking of healthcare to employment blow up in America's face?

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blow up in * face

〔人にとって〕期待に反した結果となる
逆火(さかび), バックファイヤー