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Jyutping sau2 jam4
Pinyin shǒu yín

Definitions (CC-CEDICT)
  1. to masturbate
  2. masturbation
Definitions (粵典–words.hk)
  1. 動詞
    自慰
    to masturbate
    • 我尋日手淫俾細妹見到。
      我寻日手淫俾细妹见到。
      ngo5 cam4 jat6 sau2 jam4 bei2 sai3 mui2 gin3 dou2.
      My little sister caught me jerking off yesterday.
  2. 近義詞
    打飛機
Definitions (Wiktionary)
  1. verb, derogatory, possibly
    to masturbate
    (syn.) 打潛艇, 打潜艇
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    我寻日手淫俾细妹见到。
    我尋日手淫俾細妹見到。
    ngo5 cam4 jat6 sau2 jam4 bei2 sai3 mui2 gin3 dou2.
    • My little sister caught me jerking off yesterday.