我其貌不扬我吊儿郎当
[wŏ qí mào bù yáng wŏ diào ér láng dāng]
'I’m Not Handsome/Talented, So I’m Reckless.' This suggests self-deprecation combined with nonchalant and slightly rebellious behavior; a way of admitting imperfections while embracing carelessness or audacity in lifestyle choices, which can also imply defiance against social expectations.