晒銀時 [－银时]

Jyutping saai3 ngan4 si4
Pinyin shài yín shí

Definitions (粵典–words.hk)
  1. 名詞、外來語
    對大學​自然科​學課​程​嘅​音​譯​貶​稱​，​指​又​晒​銀紙​又​晒​時間​；​常見​於​主修​科​學​嘅​大​學​生​自嘲​。
    derogatory transliteration for natural science programs in universities; literally: wasting money and time