骚年待我长发及腰勒死你
[sāo nián dài wŏ zhăng fā jí yāo lè sĭ nĭ]
'Young man/boy, wait until my hair reaches my waist to choke/strangle you.' It uses somewhat teasing tone to express revenge or strong feelings (either affectionate or hostile, depends on context) on someone who has been annoying or significant to the person.