带我长发及腰做鬼吓死你
[dài wŏ zhăng fā jí yāo zuò guĭ hè sĭ nĭ]
This translates as 'Let my hair grow till waist to be a ghost and scare you to death'. Despite being whimsical, it somewhat conveys playful menace, probably hinting towards wanting attention, maybe even using humor as self-expression or coping mechanism.