Avoid leftovers from a meal otherwise you may be struck by lightning or marry an ugly wife.

尽量不要吃剩饭，否则出门容易遭雷劈或者娶到很丑的老婆。

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But unlikely things do occur by chance sometimes--that's how people get struck by lightning or win the lottery.

FORBES: Magazine Article

You're more likely to be struck by lightning than to find somebody who's committed in-person voter fraud or the kinds that are targeted by voter ID laws.

NPR: Study Links Voter ID Rules to Non-Voting