"Third Interlude" has a bunch, though one of the standouts is an observation by Simon:
""Tyen-sah duh ching-wah tsao duh shee-niou huh choo-shung tza-jiao duh tzang-huo!"
The air was also filled with curse words. They didn't make a whole lot of sense, or maybe the people the Captain was yelling at were supposed to be open-minded by enjoying fornication with both livestock and amphibians.
Or maybe Mal was just so angry he was getting shot at over a box of puppies that he stopped caring about his curses being comprehensible.
"I try to do a little pro bono work," he muttered as they screamed toward the town. "Get some puppies, help some kids, do a nice thing." He paused, scowling, and stood up, pistol rising.
Each exclamation point was aided by a shot from his pistol.