Question

Hit the Roof to lose your temper suddenly; to become violently angry

Accepted Answer

When Chad's grandmother saw that he had used her fur coat in his science experiment, she hit the roof. This frequently used expression comes from early 20th-century America. Imagine a person becoming so angry that she explodes and her body actually hits the roof. It creates a dramatic picture of anger. Other similarly explosive expressions are "hit the ceiling," "blow your top," and "blow your stack."

Idiom	Hit the Roof
Example	When Chad's grandmother saw that he had used her fur coat in his science experiment, she hit the roof.
Meaning	to lose your temper suddenly; to become violently angry
Origin	This frequently used expression comes from early 20th-century America. Imagine a person becoming so angry that she explodes and her body actually hits the roof. It creates a dramatic picture of anger. Other similarly explosive expressions are "hit the ceiling," "blow your top," and "blow your stack."

Hit Roof Angry Blow Chad's Grandmother Fur Coat