Meaning:
Literally translated as “a person sitting in his own home has to take blame for what he didn’t do,” this saying coined by Chinese netizens is a play on words, as there is the traditional Chinese saying “人在家中坐，祸从天上来” (祸, pronounced “huò,” means disaster; while 锅 means “pot,” which is a metaphor for “another person’s mistake”).
Example:
A: 今天开会我被老板批评了，但其实他说的事情我完全不知道，因为上周我休假了。
Jīntiān kāihuì wǒ bèi lǎobǎn pīpíng le，dàn qíshí tā shuōde shìqíng wǒ wánquán bù zhīdào，yīnwèi shàngzhōu wǒ xiūjià le。
The boss criticized me at the meeting today, but because I was on vacation last week I know nothing of what he was talking about.
B: 有时候就是“人在家中坐，锅从天上来。”
Yǒu shíhòu jiùshì “rén zài jiāzhōng zuò，guō cóng tiānshàng lái。”
Shit happens and sometimes you just have to take blame for things you didn’t do.