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Phrase(s): blow up in someone’s face
1. Lit. to blow up or explode suddenly. • The bomb blew up in the terrorist’s face. • The firecracker blew up in his face and injured him. 2. Fig. [for something] to get ruined while someone is working on it. • All my plans blew up in my face. • It is terrible for your life to get ruined and blow up in your face.
McGrawhill's American Idioms And Phrasal Verbs