你爸当年英俊潇洒你妈当年貌美如花
[nĭ bà dāng nián yīng jùn xiāo să nĭ mā dāng nián mào mĕi rú huā]
This nickname has a humorous and somewhat nostalgic tone, roughly translating to: 'Your father was once handsome, and your mother once beautiful'. The person seems lighthearted in acknowledging people change over time or could just want to reminisce past glory days of parents.