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.
See also: edge, push

Common Names:

NameGenderPronouncedUsage
Khadijeh-Persian
Lewin-English (Rare)
Friso-Frisian
Osamuo-sah-mooJapanese
PanniPAWN-neeHungarian
Alvar-Swedish, Estonian