"Would your car be easy to steal?"—"Fat chance. I've got a device that shuts down the petrol and ignition."

“你的车容易被偷吗？”—“不可能。我有一个可以关闭油门和点火开关的装置。”

《柯林斯英汉双解大词典》

You have a fat chance.

你机会渺茫。

youdao

You have a chance of being way out here with a fat-tailed distribution.

很有可能在,长尾分布的这里

耶鲁公开课 - 金融市场课程节选

But then the Broncos won the toss, so fat chance of that, right?

WSJ: Jason Gay: Tebow-Mania Blasts Into Overtime

Fat chance: the Expediency Council is dominated by conservatives and, by November 28th, it too had turned the bill down.

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Fat chance: the IMF forecasts GDP growth to average just 0.5% a year and bond yields of 7.7% between 2012 and 2017.

ECONOMIST: Daily chart