带你长发及腰我就咔嚓一刀
[dài nĭ zhăng fā jí yāo wŏ jiù kă cā yī dāo]
'If you grow your hair down to your waist then I'll snip it all off,' it could imply playful banter or jest regarding hairstyles between loved ones, but also has underlying meanings depending on personal or romantic contexts