這握頭事 Fond of Carrying Heads About
豬八戒遠遠的望見道：「哥哥好幹這握頭事。再尋一個兒趁頭挑著不好？」行者到跟前放下，八戒舉鈀就築。猪八戒远远的望见道：「哥哥好干这握头事。再寻一个儿趁头挑着不好？」行者到跟前放下，八戒举钯就筑。
逐句解 Line by line
Zhu Bajie, seeing him at a distance, said, "Brother, you are fond of this business of gripping things by the head.
握頭事 is head-gripping work, and Bajie is making a joke about the whole chapter — heads thrown through door-holes, a head buried, a head dug up and pulped, and now a fiend carried by the scruff. It is the closest the novel comes to acknowledging its own running motif.
Would it not be better to find another one, so it balances and I can carry them on the pole?"
趁頭 is to make a matching pair, so the two ends of a carrying pole balance. 挑著 takes 著 as zhe. Bajie's suggestion is that they catch a second fiend purely so the load hangs evenly, which is both a porter's instinct and a very bad joke.
Pilgrim came up and set him down, and Bajie raised his rake to hammer him.
Thirteen characters. Bajie's response to a bound and sleeping prisoner is to hit it, immediately, without asking. Wukong is about to stop him — and not out of mercy.
The balanced-load joke is Bajie's trade talking. He has carried the luggage for eighty chapters, and his eye for a badly balanced pole is professional.
It is also the third time in this chapter that somebody suggests solving a problem by adding another body to it. The fiends did it with the second head; Bajie does it here for the sake of symmetry.