Harry sat in History of Magic, his face resting in his palm, and his glasses tipping at a hazardous angle. Ron, he saw, was asleep. If he stayed unconscious for another ten minutes, he would begin snoring; loudly. Harry turned his head slightly to the left and saw Hermione bent over something that looked suspiciously unlike her usual notes, her hair falling onto the desk.
Harry smiled to himself and turned back toward a much less pleasing sight: Binns. He had resigned himself to another hour of goblin rebellions or whatever it was they were studying right now, when he felt a light tap on his shoulder; Ron had awoken, and he had just dropped a folded up piece of parchment onto Harry's desk. Harry looked at Ron quizzically, but Ron just shrugged and pointed to Hermione. Harry opened the note and immediately recognized Hermione's neat handwriting:
Meet me tonight?
Harry grinned discreetly and pocketed the note. Suddenly, another hour of notes seemed so much more bearable.