老师你比卫生纸还能扯
[lăo shī nĭ bĭ wèi shēng zhĭ hái néng chĕ]
Humorously translating as 'teacher, you can ramble on more than toilet paper'. It uses a light-hearted approach with some cultural nuance suggesting the user may perceive his or her teacher as talking a lot. The humor is drawn from an unusual and surprising metaphor linking teachers to an everyday object commonly associated with extensive availability like toilet paper.