待学渣出现定灭了你作业
[dài xué zhā chū xiàn dìng miè le nĭ zuò yè]
This humorous phrase can be understood as, when the bad student shows up I’ll finish your homework in no time. Here '学渣' refers jokingly to academically weak students. Thus it’s likely used light-heartedly among peers sharing similar academic struggles or as comic relief.