It’s likely Marjane is trying to do what Kia did with his joke and find humor in a humorless situation. But while Kia’s joke is a way for powerless soldiers to bond, Marjane’s “joke” just exposes her own lack of integrity. Marjane’s grandmother, meanwhile, insists that Marjane can’t fight oppression by oppressing others. She has to hold onto her ideals and her kindness.