After Boss Zhu got drunk and was spoken to like that by Mrs. Zhu, he was already on edge, so he was expressing his attitude and thoughts with angry shouts, and with Mrs. Zhu further provoking him, he got even angrier.
To be asked to repeat himself in front of so many people was clearly disrespectful to him. If it happened at home, it might have been bearable, but now it's in front of Boss Wang, Boss Chen, Director Wang... If he gets suppressed by her, how could he ever face them again? If rumors spread, he'd be utterly humiliated.
Adding to his already existing temper, he let all his previously concealed thoughts come out. So, under the influence of alcohol, he unabashedly said, "Damn it, I said I want a divorce from you, you stinking woman! Old hag! Who would want you?"
