He lives with me. Unfortunately, we also work in the same place, so just walking out of the room is rarely ever an option.

I've asked him why he keeps talking. He says he doesn't have anything else to do (we're clerks). I told him today that it's rude to talk and talk like he does, and he countered with: "It's rude to want to convey information?" and went on to say "Doesn't that sound stupid to you?"
So, yeah.

Of course, he doesn't really talk to me, just at me. I know because he always looks at me like I'm crazy when I'm talking, and continually tells me to "make sense".

I'm so sick of this.