钱包里的毛爷爷被人拐跑了
[qián bāo lĭ de máo yé yé bèi rén guăi păo le]
Grandpa Mao (renminbi bills bearing Chairman Mao’s portrait) in my wallet have been taken away – It's humorously saying that the money has gone, perhaps through overspending or theft, with a light-hearted way referring to financial troubles by mentioning China's currency.