The episode humorously discusses Watson's struggles on Reichenbach day, paralleling it with past events.
This year Reichenbach day falls on Monday, just like it did in 1891 and boy is Watson just taking it hard. Either he's in a coma or needing a brain tumor removed, it's all pillow forts and pie to talk about for the bull pups. There will never be a more Watson week of Watsons! Unless it's next week!