你很骄傲怎么不脱内裤炫耀
[nĭ hĕn jiāo ào zĕn me bù tuō nèi kù xuàn yào]
A sarcastic remark directed toward someone behaving ostentatiously. It means if you're so proud of yourself, why not show off all of who you are, going to an unreasonable and absurd extreme.