待我长发及腰一把勒死你
[dài wŏ zhăng fā jí yāo yī bă lè sĭ nĭ]
This internet nickname 'Wait until my hair reaches my waist to strangle you' plays on a romantic Chinese expression for when women grow out their hair as a token of maturity and marriageability. But here it is subverted into a dramatic threat, indicating either dark humor or an unrequited and intense emotion.