百斤加一 [－－－－]

Jyutping baak3 gan1 gaa1 jat1
Pinyin bǎi jīn jiā yī

Definitions (粵典–words.hk)
  1. 語句、俚語
    歇後語​，​即​係​「​多​你​一個​唔​多​，​少​你​一個​唔​少​」
    a sandwich pun that translates into one makes no difference with or without him; literally, add one to a hundred catties