睡衣睡裤去上课我真时尚
[shuì yī shuì kù qù shàng kè wŏ zhēn shí shàng]
Meaning 'wearing pajamas and loungewear for class - I'm so fashion-forward!' It is self-deprecating humor reflecting casual or unconventional attitudes towards attire while showing an ironic twist claiming it fashionable.