弥天大谎

sā mí tiān dà huǎng

撒弥天大谎

tell a real whopper

wǒ cái bù huì tīng nǐ de mí tiān dà huǎng

我才不会听你的弥天大谎。

I won't listen to your rousing lies.

zhè quán shì mí tiān dà huǎng tā shì shā rén fàn nǐ hái bāng tā

这全是弥天大谎，他是杀人犯，你还帮他。

It's all a big lie. He's a murderer, and you should help him.