kinpin兄說的沒錯, 是在問包租公婆:"你們要怎麼做"的意思
What are you preparing to do ?
What will you prepare to do ?
詳情可參考雙碟版老外與周星馳訪談那一段

我實際再聽一次阿鬼說的是:
What , are you(阿油), prepare(皮派), to do....
(雖然文法不太對 )