The Question and Answer section for The Absolutely True Diary of a Part-Time Indian is a great resource to ask questions, find answers, and discuss the novel.
Roger tells Arnold a humiliating racist joke. I can't repeat it on this forum space.
Junior belongs to the "Black Eye of the Month Club" because he gets beat up at least once a month.
The text does not say who told Junior about Eugene's death but I don't think it was the coach.