待你长发及腰我必用来上吊
[dài nĭ zhăng fā jí yāo wŏ bì yòng lái shàng diào]
A dramatic expression combining love and despair. Literally: 'When your long hair reaches your waist, I will use it to hang myself.' It reflects extreme emotions where love and loss become interwoven in a dark, morbid statement.