- go through the roof
- go through the roof1. Fig. Inf. to become very angry. •
She saw what had happened and went through the roof.
•My father went through the roof when he saw what I did to the car.
2. Fig. Inf. [for prices] to become very high. •These days, prices for gasoline are going through the roof.
•The cost of coffee is going through the roof.
Dictionary of American idioms. 2013.