give a crap说废话。crap n. <俚>废话；质量差的东西；垃圾，粪便。

【例句】
I personally don't give a crap what you think, but you bad-mouthing our business is upsetting my girl here.
我个人是根本懒得理你有何看法，但你在外面抹黑我们的生意让我朋友不高兴了。

Look I know you don't give a crap about anything.
听着我知道你是什么都不在乎