He's basically bullshitting.

他在胡说八道。

《柯林斯英汉双解大词典》

She's just bullshitting.

她不过是在瞎扯。

《牛津词典》

But if she was bullshitting me, then in a way it's a ray of hope.

但是如果她是在跟我扯屁，从某个角度而言，就是一线希望。

youdao

If you market to me in your best marketese the chances are you are bullshitting.

FORBES: How Social Media Is Changing The Enterprise and Politics

"We've got to stop bullshitting the public, " he told TIME.

CNN: It's My Party And I'll Run If I Want To