@Korin is a Lausbub! Probably because it would be "Der Mann ist kein Brot". I think it makes more sense to use names. Because you wouldn't say "Der Tomas isst Brot nicht" but rather "Der Thomas isst sein Brot nicht" or "Der Thomas isst das Brot nicht" and "Der Thomas isst kein Brot". Or so I would think. But it's good to talk about bread. We Germans have probably as many types of Bread as we do in grammatical ways to express how we eat it. Seriously. Has any nation out there as many different types of bread as we Germans do? And even that doesn't cover everything.