Ron yawned widely, not even bothering to cover his mouth. Harry was stumbling through some sort of explanation, but he was having trouble following it. Whether it was because of the hour or the nonsense of it, he wasn't sure.
Then Harry closed himself off again, and Ron groaned. They were going to be at this all night if he wasn't careful. He pulled the throw pillow out from under his head and tossed it. "Out with it already."