The Librarian sat on his desk and watched his domain in a thoughtful way. Observing those who entered the library was always interesting to him; especially since it was open to the public. There were still several students here though. One sat alone with the frantic expression of someone who has exams the next day and they've just forgotten everything they knew on the subject. There were another two trying to laugh silently over something they'd found in a book. They weren't succeeding however, those sitting nearby kept throwing the two annoyed glances and since this included three wizards trying to work the Librarian wondered how long it would take them to realise and shut up.
Turning away from the wizards, he saw Captain Carrot showing a bemused Sergeant Angua down an aisle they shouldn't have even seen. Had it been anyone else, the Librarian would have chased them off immediately, but he liked Captain Carrot and he knew the man wasn't the sort to get lost easily.
As always, those who entered the library looked up at the ceiling; several people were doing so now, blocking the doorway as they stared. Now that he was watching them, the Librarian had the urge to study the dome as well and he noted with interest that when he looked up, all of the wizards turned to watch him.
The smell of fried food reached the Librarian and when he sniffed he realised it was coming from inside his library. Leaving his perch on the desk he knuckled off in search of the smell. Usually the Librarian held the culprit upside down and bounced them on the head a couple of times until they got the message; but when he found the man - he grinned.
The man may have been eating in his library, touching books with greasy fingers but he was clearly new to the city and hadn't yet learnt all its traps that everyone else avoided religiously. The Librarian sat down and watched as the man finished his sausage inna bun and licked his fingers. He decided he didn't need to teach the unlucky man a lesson - he was clearly due for one anyway.
Sure enough, less than five minutes later he was running out of the library, a look of nervous concentration on his face. It was the sort of look everyone wore when they were trying to remember where the privy was at nigh speed.
Happy that justice had been done; if not in the traditional way, the Librarian returned to his desk and resumed people watching, wondering if they would become boring to watch.
The two students were now unable to laugh quietly and their giggles and snorts echoed around the room. Only the Librarian heard the sound of chairs scraping on the floor as the wizards stood up and he grinned. Clearly not.