madder than a wet hen

Translations
(кто-то) вне себя от злости
When she found out about the prank, she was madder than a wet hen.
Когда она узнала про розыгрыш, она была вне себя от злости.
Definitions
Extremely angry or upset; more irate than usual. The phrase comes from the observation that hens become agitated and difficult to handle when wet.