Ted says "'The Price is Right' is on at 10:00 AM," but the show actually aired at 11:00 AM in the Boston area in 1993.
Incorrect signage for the Fleet Bank branch where Ted has his safe deposit box: it's depicted as a generic red sign with gold lettering when it had been blue with stylized sailboats.
John has several Transformers action figures on the bookshelves in his bedroom. They are all figures released well after the 1993 setting of this series. Most are from the 2010s.
The Boston Bruins pennant in John and Ted's room features the team logo introduced in 2008 but the series takes place in 1993.
Ted said Tom Hanks and Diane Keaton are Oscar-winning actors, but Hanks received his first Oscar in march 1994 and the series takes place in 1993.
Ted slips over at the front of the house whilst holding a gun and it accidentally fires. The bullet travels at an upwards trajectory and breaks a window. Somehow, it then hits a television in the house, which is positioned lower than the base of the window.