你要是学渣那我就是学灰
[nĭ yào shì xué zhā nèi wŏ jiù shì xué huī]
'If You're a Slacker, I’m a Study Dust': A playful and slightly deprecating self-depreciation. 'Study dust' suggests being even less capable than a struggling student. This is a way to humorously acknowledge failure without taking things too seriously.