待我指甲三寸我挠死你
[dài wŏ zhĭ jiă sān cùn wŏ náo sĭ nĭ]
Translates rather playfully if not darkly humorous, saying 'When my nails grow long enough, I will scratch you to death.' While extreme and obviously exaggerated, it depicts an intention of revenge or irritation against someone causing annoyance.