追你姐当你姐夫追你哥当你嫂子
[zhuī nĭ jiĕ dāng nĭ jiĕ fū zhuī nĭ gē dāng nĭ săo zi]
A playful or cheeky statement meaning: 'I'll pursue your older sister to become your brother-in-law; I'll pursue your elder brother to become your sister-in-law'. It hints at a jest or flirtation but also might indicate familial closeness or a desire to integrate into a family unit.