Idiom of the day :- The penny drops

Usage, examples and definition of the Idiom :-

Oliver was sound asleep when a short but violent trembling action shook his room and rattled his bed. ‘That may be an earthquake,’ he thought, but then he remembered that he was an ant and the penny dropped. ‘Oh, that’s just someone around overhead,’ he said. This expression means to finally realize or understand something after spending a little time thinking about it.