If you live in downtown Boston you are aware that it is the day before “Allston Christmas Eve” There isn’t a single Uhaul van or truck available in metro Boston, because tens of thousands of students are descending upon Boston to move in. I don’t know if it is true, but I’ve heard that approximately 50% of the city’s rentals have a September 1st lease.
As a result of the massive number of people moving on the same day, depending on where you live getting around can go from difficult to nearly impossible as the streets of Boston become full of double-parked cars, vans, and trucks starting August 31st. A wide range of discarded household items that are no longer wanted end up on the city sidewalks, starting August 31st. This ‘littering’ of discarded items is probably most acutely felt in the student-dominated neighborhood, Allston, and where / how the term “Allston Christmas” came about.
In case you think I’m making this up, Urban Dictionary added this term in 2008 here and one only needs to type in the phrase in Google and select images to see what the streets of Boston will look like starting August 31st.

