待我长发及腰你娶我可好待我指甲变长掐死你可好
[dài wŏ zhăng fā jí yāo nĭ qŭ wŏ kĕ hăo dài wŏ zhĭ jiă biàn zhăng qiā sĭ nĭ kĕ hăo]
A contradictory expression reflecting two opposite scenarios: growing hair long enough for someone special to ask him/her to marry you or when fingernails grow, you want to hurt someone who did you wrong. This could be used by someone playingfully or emotionally unstable.