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Jyutping do1 dak1 m4 siu2
Pinyin duō dé ⋯ wú shǎo

Definitions (粵典–words.hk)
  1. 語句
    反話​,​諷刺​人​幫​唔​到手​,​越幫​越忙
    used sarcastically to express that someone has been a nuisance or has caused lots of trouble; literally 'thanks for not a little'
    • 你又打爛嘢?我真係多得你唔少呀!
      你又打烂嘢?我真系多得你唔少呀!
      nei5 jau6 daa2 laan6 je5, ngo5 zan1 hai6 do1 dak1 nei5 m4 siu2 aa3!
      You broke something again? Thank you for what you've done! (sarcastic)