假如你是谎话连篇那也需要用心去编
[jiă rú nĭ shì huăng huà lián piān nèi yĕ xū yào yòng xīn qù biān]
If you are lying continuously, then at least put some effort into it. The person uses this idiom for mocking somebody’s lies that sound too simple or easy to see through, showing his dissatisfaction.