你美得像你大姨妈你帅的像你大姨夫
[nĭ mĕi dé xiàng nĭ dà yí mā nĭ shuài de xiàng nĭ dà yí fū]
A playful nickname literally meaning 'You are beautiful like your aunt, and you are handsome like your uncle.' It's an amusing way to compliment or tease someone about their looks.