I'll check the kitchen floor. - Knock yourself out.

我去检查厨房地板随便查！

youdao

You should knock yourself out trying, but in my own experience I have found some times where I can't do that.

您应该努力尝试这么做，但以我个人的经验，有时我发现有些地方我也不能这么做。

youdao

Reward yourself when you complete a task you wanted to delay. It will give incentive to knock out other unpleasant tasks.

当你完成了你本来打算延迟到任务的时候奖励一下自己！它会激励你去完成那些令人厌恶的事情。

youdao

Knock yourself out: The GamePad can double as the main screen in most games.

CNN: Nintendo Wii U review: A tale of two screens