There is a passage like that in the Iliad, but it isn't this one. This is a pretty liberal reinterpretation.

But, if you're interested:

> The rest now took their seats and kept to their own several places, but Thersites still went on wagging his unbridled tongue—a man of many words, and those unseemly; a monger of sedition, a railer against all who were in authority, who cared not what he said, so that he might set the Achaeans in a laugh. He was the ugliest man of all those that came before Troy—bandy-legged, lame of one foot, with his two shoulders rounded and hunched over his chest. His head ran up to a point, but there was little hair on the top of it. Achilles and Odysseus hated him worst of all, for it was with them that he was most wont to wrangle; now, however, with a shrill squeaky voice he began heaping his abuse on Agamemnon. The Achaeans were angry and disgusted, yet none the less he kept on bawling at the son of Atreus.

I kind of like seeing the morality of the day shine right through the text. No shades of grey here.