American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

Foam at the mouth


Indignant. Overly  angry. Highly agitated in a positive or negative manner.   “When I told my dad I wrecked his car, he began foaming at the mouth.” {See 50 Levels of Anger video.}

It can also refer to arousal. “After she took off her bikini top all the guys around her began to foam at the mouth.”


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