屁话

nǐ yǐ wéi wǒ huì xìn nà pì huà

你以为我会信那屁话？

You expect me to believe that shit?

pì huà wǒ yī gè zì yě bù xìn

屁话！我一个字也不信。

That's bullshit! I don't believe a word of it.