flip your lid
Meaning
To suddenly lose your temper or self-control; to become very angry or upset.
Origin
Mid-20th-century American slang. “Lid” is a metaphor for the top of a container (or your head), and “flip” suggests it popping off—like your “cover” coming off when you lose control.
Notes
Informal and fairly strong. Implies an abrupt outburst of anger or losing control; can sound accusatory if said directly to someone.
Examples
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Dad flipped his lid when he saw the dent in the car.
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I thought she would flip her lid, but she stayed surprisingly calm.
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Don’t flip your lid over a small mistake—we can fix it.
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The coach flipped his lid after the team ignored the game plan.
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He nearly flipped his lid when the flight got canceled at the last minute.
Grammar & Usage Notes
Usually used as a verb phrase: “flip your lid” (your is flexible: my/his/her/their). Can be inflected: flipped/flipping. Often with “when/if” clauses or after triggers (“He flipped his lid when…”).
Synonyms
- lose your temper
- blow up
- hit the roof
- fly off the handle
Antonyms
- keep your cool
- stay calm
- keep your composure