
Blow up in somebody’s face
Negative Outcome
The phrase implies a failed result, often unexpectedly and with negative consequences.
The surprise party blew up in his face when the guest of honor arrived early.
Emotional Impact
The phrase can express frustration or dismay due to plans going wrong.
Her elaborate proposal blew up in her face, leaving her devastated.
Consequences
It's often used when there are significant consequences to the failure.
His dishonesty about his credentials finally blew up in his face during the interview.