The man is off his rocker.

这个人是精神错乱了。

youdao

I think by the end, the old guy was just off his rocker.

我想书快写到结束时，老家伙刚好疯掉了。

youdao

The old prospector had stayed alone up in the mountains so long that he'd gone off his rocker.

这位年老的探矿者，独自一个人在山上呆了很久，他已发疯了。

youdao

But she also cuts the figure of an impulsive woman, difficult to please, harder still to pin down, and known, lately, to be off her rocker, understandably so, because of her son's death.

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Have I simply gone off my rocker?

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