Overdo anything, and it may come back to bite you.

做事过犹不及，物极必反。

Why? Because your words may come back to bite you.

为什么呢？因为你的话可能会反咬你一口。

You never know when it might come back to bite you.

你永远不知道未来这会对你造成什么影响。

However, save " come back to bite you" for a more informal situation.

但是，" come back to bite you" 适用于更非正式的情境。

You can also say a bad thing you did or a bad decision you made comes back to bite you.

你也可以说你做的一件坏事或者曾做过的错误的决定会给你带来麻烦（come back to bite you）。

Rebuff him, and it may come back to bite you in the afterlife.

拒绝他的话 也许在来世他会回来咬你。

But the fact that it's ultimately meaningless will come back to bite you and you'll be unfulfilled because the job is ultimately meaningless.

但你的工作毫无意义的事实会反噬你，你会没有成就感，因为这份工作最终毫无意义。

There's a reason we can't just go around telling the truth: 'cause it comes back to bite you, hard.

因为真相会反咬你一口 伤你很深。