(Internet slang) previous poster in a forum thread
Definitions (CC-CANTO)
the floor above
Definitions (粵典–words.hk)
詞綴
喺表示數量嘅短語後面,表示多於、大過、高過某個數值 used after numerals (and quantifiers) to mean "above / more than / higher than a certain numerical value"
三萬蚊樓上
三万蚊楼上
saam1 maan6 man1 lau4 soeng6 more than thirty thousand dollars