fish or cut bait 当机立断；要么全力以赴要么索性放弃

【例句】
Either go on to college or go out and find yourself a job. It's time to fish or cut bait!
你要么呆在学校继续上学，要么就给自己找个工作。该到你当机立断的时候了。

Now it's time to fish or cut bait. I need your answer by six o'clock tonight -- otherwise we'll leave you out of it!
现在你务必当机立断。我必须在今晚六点前得到你的答复，否则我们就把你排除在外。