Lose it.

Lose it.
“Lose it”这个俚语用来形容某人突然非常生气或者情绪失控。例如,在长时间等待后,如果服务还是没有改善,顾客可能就会“lose it”。
He just lost it when he heard the news!
他听到这个消息时,简直失控了!
Sometimes, I just lose it and laugh uncontrollably.
有时候我忍不住,会笑得不可开交。
It's scary how calm she remains while everyone else around her loses it.
她保持冷静的时候真让人害怕,而周围的人却都在失控。