下课铃声TMD动听上课铃声TMD忐忑
[xià kè líng shēng tmd dòng tīng shàng kè líng shēng tmd tăn tè]
This username contrasts the feelings of hearing the bell at different times. The phrase 'TMD' stands for a mild Chinese curse word indicating strong emotion, either frustration or excitement. The person expresses that the sound of dismissal (end-of-class) brings pleasant anticipation of freedom, while the start-of-class bell provokes unease and anxiety. Overall it reflects a student's mixed emotions towards school life.