Kermit's Swamp Years is a 2002 Direct-to-DVD movie that is a prequel of sorts to The Muppet Movie, following Kermit's years of living in the swamp in Mississippi before he decided to travel to Hollywood. It opens in the present day with Kermit moving right along on his motor-scooter to visit his old family in the swamp, and then he starts to narrate his tale to the audience of one particular adventure he got involved in when he was only a boy. He had two playmates, Goggles, a nervous, cowardly toad with glasses, and Croaker, a smooth, confident frog. Said adventure involved a confrontation with two human frog hunters, Goggles getting frog-napped, a dog named Pilgrim, and an ordeal through a pet shop, through downtown, and climaxing in a high school classroom where they dissect frogs!It is produced by Columbia Pictures and Jim Henson Home Entertainment. Even though it is not as popular as most of the other Muppet films, it contains various mythology gags and nods to Jim Henson's legacy.
This movie contains the following tropes:
Accidental Aesop: Don't dissect frogs because.... they can talk?! ...In-universe, maybe.
Considering this movie is supposed to detail Kermit's youth, the movie, ideally, would take place no earlier than the early 50s... however, a lot of Croaker's dialogue consists of slang and terminology that was far more common of The Nineties and Turn Of The Millenium ("Boy, do I have issues!", "I'm not worried, I'm psyched!").
Similarly, when we arrive at George Washington High School, the students are clearly working from modern-day, full-colored text books, and are seen wearing or rolling backpacks, when they would more than likely have books that look like small, jacketless, hardback books bounded together with leather straps.
Touch-tone phones are seen throughout the movie, however, those weren't invented until The Sixties, they would have been rotary phones.
Wilson's Pet Shop is full of modern-day pet food, pet bedding, and pet accessory brands. Not only that, but Wilson listens to Bachman Turner Overdrive's, "Roll On Down the Highway," on the radio, which was released in 1975 (the band itself formed in 1973). Wilson also observes Blotch attacking Goggles and remarks, "You two should be on the Nature Channel!" which certainly wouldn't have existed in the mid 50s.
Ernie the Alligator, who in The Muppet Movie appeared as an animatronic, non-speaking, naturalistic-looking robot in the opening scene, here appears as a more traditional Muppet who can speak! He was on good terms with Kermit back then too.
Kermit is inspired by an action film while in a movie theater. This is clearly a nod to him remarking how "there's a matinee downtown every Sunday" in the original film.
Dr. Kraussman was named after Mel Brooks' German mad scientist character Professor Kraussman from The Muppet Movie.
Defeat Means Friendship: Played with, after Goggles and Blotch end up at Wilson's Pet Shop. Beforehand, Blotch was a bully who frequently beat up Kermit and his friends, and after he and Goggles are put in a tank with a snake that begins to constrict Blotch, Goggles challenges the snake to constrict him instead. This is because Goggles, being a toad, can use his poison glands for defense. The snake suffers severe itching, and retreats; Blotch asks Goggles why he did that, and when Goggles responds, "I was helping a friend", Blotch is deeply touched and turns over a new leaf.
Freudian Excuse: Kraussman wants to kill frogs because he had to dissect one when he was in high school, but was laughed at by everyone for not going through with it, and for being called crazy for claiming frogs can talk.
Screw the Rules, I'm Doing What's Right: Frogs have an unwritten rule never to talk to humans. Kermit has no choice but to break it so he and his friends can escape from the classroom and go home. This implies that Kermit is also a liberator among his species- no frog has ever been revealed to be able to talk to any human before this, save for maybe Kraussman as a boy, who tried to convince his other classmates and failed. In The Muppet Movie, talking frogs are seen as completely ordinary.