畫龜 [画龟]

Jyutping waak6 gwai1
Pinyin huà guī

Definitions (CC-CANTO)
  1. (verb) to sign
Definitions (粵典–words.hk)
  1. 動詞、俚語
    簽​名​嘅​戲​稱
    (humorous) to sign one's name; literally: to draw a turtle
    • 冇問題就喺底下畫隻龜啦。
      冇问题就喺底下画只龟啦。
      mou5 man6 tai4 zau6 hai2 dai2 haa6 waak6 zek3 gwai1 laa1.
      If everything is okay, sign your name down there.