"It ain't my fault!" Jesse wasn't thinking about anything anymore, certainly not about sparing Wash. He took the hits that were swung at him, and they just worked to lessen his sympathy. Though that would surely return soon after this brawl was over. Jesse'd probably even feel really bad for what he'd done once everything was through.
"And I don't know what the fuck yer sayin to me!" He hated when people spoke in languages other than English. Zoe did it every once in a while, but she'd largely quit. At least around him.
He countered Wash's fairly well connected punches with his own. He thought that if Wash hadn't been quite so drunk, that there would have been a better aiming of his hits, and this fight wouldn't have been quite so unfair. Still unfair, but not as much. Despite the drink, Wash was hitting solidly, and making contact, just probably not where he was intending to.
Jesse mainly tried for body shots, still not wanting to do a lot of damage. But he did let one fly in Wash's mouth's general area, mostly to shut him up.