「什麼邏輯」is a phrase, commonly used to complain about the nonsense that someone is saying. The English equivalent is precisely “nonsense”. For example: When a harsh wife is complaining to her husband that she cannot have a successful career because her husband didn’t clean thier house regularly, hence the bad luck, her husband may use the phrase 「什麼邏輯」. Wife：最衰都係你，一日都唔收拾下間屋，污糟邋遢咁，累到我無得升職加人工。（ I will not be promoted and have my salary increased. It is all on you, because you have never cleaned our house.) Husband: 你呢啲什麼邏輯？你有無得升職加人工同我有無做家務有咩關係？ (Nonsense. How on earth is it even possible that because I didn’t do the chores, you get no promotions and salary increase. )

例如： A:哇！呢度滴嘢太难食啦！一日都系怪你！（A认为：东西难吃→怪B） B:哇！你呢滴系乜嘢逻辑吖！关我乜嘢事吖！(B认为：东西难吃→和自己没关系，A的逻辑logical thinking有问题)

你這是甚麼邏輯（你呢個係咩邏輯） 你說這是我做的？你甚麼邏輯？（你話呢個係我做嘅？你咩邏輯呀？） 有沒有搞錯？你腦袋進水？甚麼邏輯呀？（有冇搞錯？你腦入水？咩邏輯呀）

什么逻辑