你装腔作势我虚情假意
[nĭ zhuāng qiāng zuò shì wŏ xū qíng jiă yì]
Translates roughly to 'You put on airs; I respond insincerely.' This reflects a mutual attitude of pretentiousness between two parties who do not show true emotions or intentions to each other. This can indicate jaded attitudes toward social interactions in modern life.