你點會咁失策唔記得幫講者買水架！
你点会咁失策唔记得帮讲者买水架！
nei5 dim2 wui5 gam3 sat1 caak3 m4 gei3 dak1 bong1 gong2 ze2 maai5 seoi2 gaa3! How could you forget buying a bottle of water for the speaker?
Definitions (Wiktionary)
verb
to make a blunder, to slip up; to miscalculate; to be unwise in a move
Definitions (Kaifangcidian)
（沒有對應漢語詞彙）
Examples (粵典–words.hk)
Cantonese
失策
失策
sat1 caak3
to do sth unwise
Cantonese
今次选举中，有个党配票失策，全军覆没。
今次選舉中，有個黨配票失策，全軍覆沒。
In this election, a party failed in tactical voting resulted in completely wipe-out.