Definition
To suddenly and impulsively decide to do something, often something unexpected or foolish.
突發奇想
She took it into her head to quit her job and travel.
她突然心血來潮辭掉工作去旅行。
He took it into his head yesterday to dye his hair pink.
他昨天突然心血來潮把頭髮染成粉紅色。
The children took it into their heads to dance in the rain.
孩子們突然心血來潮在雨中跳舞。