别装了你又不是塑料袋
[bié zhuāng le nĭ yòu bù shì sù liào dài]
'Stop pretending, you're not a plastic bag' humorously addresses hypocrisy or inauthenticity. A plastic bag is used as a metaphor for something cheap and easily discarded if broken; thus, this username calls out superficiality while valuing sincerity and transparency.