push over the edge

push/drive somebody over the edge

(informal)

if an unpleasant event pushes someone over the edge, it makes them start to behave in a crazy way She had been driven over the edge by the separation from her husband.

Common Names:

Name	Pronounced	Usage
Guiying	-	Chinese
Parry	-	Welsh
Ladonna	lə-DAHN-ə	African American
Kerenza	-	English (Rare)
Erskine	UR-skien	Scottish, Irish, English (Rare)
Silvano	seel-VAH-no	Italian