In an office building, there are two coworkers named Rachel and Ross. Rachel has a habit of leaving her coffee mug on Ross's desk every morning after their daily chat. One day, Ross gets fed up with this and decides to hide Rachel's mug in the break room cabinet. While Ross is away from his desk, another coworker, Monica, sees the mug in the cabinet and returns it to Rachel's desk, thinking someone misplaced it. When Rachel comes back to look for her mug, where does she think it might be? What does Ross think happened to the mug?
Respond briefly.
Rachel, upon returning to look for her mug and finding it on her own desk, might think that she forgot she already put it back after talking with Ross, or she might assume someone found it and returned it to her. Since it's part of her daily routine to leave the mug on Ross's desk, she likely doesn't suspect that anything out of the ordinary has happened. 

On the other hand, Ross, upon discovering that the mug is no longer in the break room cabinet where he hid it, may think that Rachel found it and took it back without mentioning anything to him, possibly out of embarrassment or as a silent acknowledgment that she should keep track of her mug. Ross could also consider the possibility that someone else found the mug and returned it to Rachel, or that Rachel happened to need something from the cabinet and found it by chance. His assumption would depend on how common he believes it is for other coworkers to use or organize items in the break room cabinet.