This is the first appearance of the APM music track "Fight! Fight! Fight!". The track would later be used for the melody to the song "Now That We're Men" in The SpongeBob SquarePants Movie (2004).
In 2018, the episode "Mid-Life Crustacean" was removed from rotation on the U.S. Nickelodeon channels and by 2020, on streaming sites & most digital stores (including Paramount+), due to the panty raid scene being deemed "inappropriate for children". This removal was met with backlash from fans and non-executive crew members who considered the act hypocritical due to the fact that the series has a lot of episodes with adult and edgy humor, even more than this in particular. The episode remains on most home video releases.
In the German dub, Squidward's surname is at one point mispronounced as Teewurst. Teewurst is a sausage meant to be used as a meat spread on crackers or bread.
Although This Episode Premiered In 2003 It Was Made In 2002 According To The Credits