香港中英夾雜字典

定義: Often added after '一定', this is a code-mixing phrase used by native Hong Kongers to refer to being absolutely certain that you will win, like in a bet or game.

用法: E.g. 今次D牌咁靚，一定sure win啦！ E.g. 你咁有學歷同咁smart，面試一定sure win啦！

同義詞: 必勝

參考: https://www.cantonese.sheik.co.uk/dictionary/words/61304/

定義: Known as Kongish, this is a phrase used by native Hong Kongers to describe someone who does not know anyone. Originated from a game similar to Rummikub where pulling cards should add up to nine, but not over. Otherwise, the player will lose the game.

用法: E.g. I have never been to this event before! Everyone was like 'three does not know seven'!

同義詞: 三唔識七

參考: https://www.localiiz.com/post/culture-local-stories-popular-cantonese-idioms