再莫鬥口 No More Backchat on the Road
長老聞言，喝道：「這個獃子，怎麼只思量擄嘴？快走路，再莫鬥口。」八戒不敢言，掬掬嘴，挑著行囊，打著哈哈，師徒們奔上大路。长老闻言，喝道：「这个呆子，怎么只思量掳嘴？快走路，再莫斗口。」八戒不敢言，掬掬嘴，挑着行囊，打着哈哈，师徒们奔上大路。
逐句解 Line by line
The elder heard this and shouted, "You Idiot, why is your mind always on stuffing your mouth?
Tripitaka settles it the way he settles most things, by shouting. 獃子, Idiot or blockhead, is his standing name for Bajie and by now almost affectionate. 擄嘴 is the vivid one: 擄 is to seize or carry off by force, so the compound is something like to grab with the mouth — to stuff your face. 思量 means to turn over in the mind, and the reproach is that this is the only thing Bajie ever turns over.
Get along the road, and no more of this squabbling."
鬥口 is literally to fight with mouths — to bicker, to trade words. It is still current Chinese for exactly that, and it is the perfect word for what has just happened, because nobody in this argument was ever going to do anything but talk.
Bajie dared say nothing more. He worked his snout about, shouldered the baggage, laughed it off, and master and disciples struck out along the high road.
Four small actions in a row, and together they are a complete portrait of a man losing an argument gracefully. 掬掬嘴 is Bajie pushing his snout out and working it — his one physical tic. The character turns up three times in this chapter and two of them are this gesture; he does it again the moment he next loses his temper. 著 is zhe in both places here, the ongoing-action marker: shouldering the pack, laughing as he goes. 哈哈 is the laugh itself, and the idiom built on it still means in modern Chinese to laugh something off rather than deal with it, which is precisely what he does.
The argument ends the way these arguments always end, with Tripitaka losing patience and everyone walking on. What is notable is how little he settles: he does not say Bajie is wrong, only that he should stop talking.
Bajie's exit is one of the small perfect passages in the novel. He does not concede, sulk, or answer back. He works his snout, picks up the luggage he was always going to carry, and laughs, and the story moves on. He has been carrying that baggage since he joined the party in the nineteenth chapter, complaining the entire way, and he has never once put it down.