As she walked along the hallway, Coraline became aware of a slight scrapping sound behind her, as if something was dragging along the floor. She spun around to see a highly suspicious garbage bin sitting in the middle of the hallway behind her. She frowned, as she was certain that it hadn't been there a few moment ago. Deciding to test whether it was moving or not, Coraline made a mental note of the bin's position in the hallway, before turning and taking three steps forwards, and then checking to see if the bin had moved. As suspected, it was moving somewhat. She repeated this movement again, just to make sure, before turning around and staring at the bin, musing over what she should do. There wasn't anything reflective near here that was big enough for her to pass through, so she couldn't just go into her dimension and jump to class that way. She was also fairly certain that she didn't want to get caught up in whatever prank this was - probably some psychic or something was moving the bin around. But she had no way to combat a psychic, or, if it was being caused by some kind of spirit, she couldn't detect it. An idea then popped into her head - the bin wouldn't move while she was facing it, so if she just walked backwards to class, there would be no problem. With this in mind, Coraline took a few steps towards the class, keeping her body facing the bin, to see how it would react.