
Foam at the mouth
Extreme Anger
Use to emphasize a very strong, sometimes exaggerated, anger in informal situations.

He was foaming at the mouth when he saw the scratch on his car.
Informal Speech
Common in spoken English and informal texts like emails or messages to friends.

My mom started foaming at the mouth when she heard I was suspended.
Figurative Use
It's not literal foam; it's a metaphor for the extent of one's anger.

The coach began foaming at the mouth after the referee's call.
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