原文 Original text
繁體 Traditional
Reader's edition
侮著臉道 Covering His Face
獃子侮著臉道：「哥哥，你實是那怪吃了，你、你怎麼又活了？」行者道：「像你這個不濟事的膿包？呆子侮着脸道：「哥哥，你实是那怪吃了，你、你怎么又活了？」行者道：「像你这个不济事的脓包？
逐句解 Line by line
獃子侮著臉道：「哥哥，你實是那怪吃了，你、你怎麼又活了？」
呆子侮着脸道：「哥哥，你实是那怪吃了，你、你怎么又活了？」
The fool covered his face and said: "Brother, the creature really did eat you. How — how are you alive again?"
著 reads zhe, marking the covering as held in place. The character 侮 stands here for the one meaning to cover, borrowed for its sound.
行者道：「像你這個不濟事的膿包？
行者道：「像你这个不济事的脓包？
Wukong said: "You useless bag of pus, is that what you think?
不濟事 — of no use for getting anything done. 膿包 is a boil, and as an insult means a soft thing that bursts under pressure.
The stammer is the detail to notice. Bajie repeats the word for you before finishing his question, and the novel writes the repetition into the text rather than describing it. That is a rare thing in Ming prose and it does the work of a stage direction: the man is frightened and has not yet decided whether he is looking at his brother or at a ghost.
Covering the face is what you do in front of something you should not be looking at, and it is also what you do when caught out. Both readings apply. He has been slapped, he has been exposed, and he would rather not be seen at all just now.
Wukong's insult is a boil — something that looks solid until it is pressed. He has just spent a chapter being genuinely, physically brave in the belly of a monster, and the contrast is the point of the abuse. The two of them have distinct kinds of courage, and the novel is honest about which kind it prefers.