The children 'snapped to attention' [=suddenly stopped moving around, talking, etc.] when the teacher clapped his hands.
They 'snapped' [='broke'] a 10-game losing streak. [=they won a game after losing 10 games]
I don't know how to get her to 'snap out of' her depression. [=to stop being depressed]
(..) in case you didn't notice. Although you treat them that way. We don't scare them any more than we have to, Percy. - They're under enough strain as it is. - Men under strain can snap. Hurt themselves and hurt others. That's why our job is... ...talking... ...not yelling. (..)1999 The Green Mile