待你长发及腰老子咔嚓一刀
[dài nĭ zhăng fā jí yāo lăo zi kă cā yī dāo]
Wait till your long hair touches your waist, then I chop it off. Uses exaggerated language typical of online humor to suggest impatience for change or dissatisfaction with prolonged waiting; there's likely playful sarcasm here regarding anticipation of a significant transition, possibly referring to drastic actions after long periods of patience.