情急智生

- hit on a good idea in a moment of desperation; A good [clever; An excellent] idea occurred to one's mind at the crucial moment.; Good ideas come at [in] times of crisis.; have a wily thought in the exigency of the moment; have quick wits in an emergency; One's wits fly fast when in great peril.; show resourcefulness in an emergency; suddenly hit upon a way out of a predicament; The idea just came to someone on the spur of the moment.; Wit comes when one is in a critical moment.