After discovering Marge's diploma, Homer recounts the time he gave up his dreams of being a musician just to put Marge through college until Marge breaks Homer's heart and falls for her professor.

!! Tropes:
* BaitAndSwitchComment: Homer brings two coats and two pairs of gloves and tells Bart and Lisa they'll keep them warm. He then throws the coats and the gloves at the fireplace.
* BeCarefulWhatYouWishFor: Frustrated with Marge spending a lot of time with her professor, Homer tells her that she should go with him. Little did he know that Stefane was within earshot and agrees to take Marge.
* TheCameo: Weird Al Yankovic appears on ''The Simpsons'' again, this time doing a parody of one of Sadgasm's "Shave Me", calling his version "Brain Freeze".
** MTV's Kurt Loder delivers a news report about Sadgasm's breakup.
* ContinuitySnarl: Besides Marge's personality (which a small, but vocal minority have cited as the reason they despise this episode), the main problem with this episode is the careless retconning of Homer and Marge being young and childless in the 1990s and the forced jokes about 1990s pop culture (especially considering that the show itself was a huge part of 1990s pop culture). Mike Amato put it best in his review:
-->Let's talk for a second about what I believe to be the show's moving timeline. Homer and Marge's senior prom was in 1974, but that was from "[[Recap/TheSimpsonsS2E12TheWayWeWas The Way We Was]]", which aired in 1991. With the show still airing, being set in modern time, and with the characters not aging, time shifts forward, so at the point this episode aired, Homer and Marge would have graduated high school in... 1991. Weird, huh?
* DevotedToYou: Even though Marge was cruel to him and left him for Stefane, Homer still loved her and sung a heartbroken song about her, mentioning her by name.
* FauxYay: When Moe got caught trying to steal a patron's wristwatch, he claimed he was trying to flirt. To Moe's [[OhCrap horror]], his "feelings" were reciprocated.
* INeedAFreakingDrink: Subverted. Homer goes to Moe's for a drink, only to discover that Moe is offering cigars.
* ItWillNeverCatchOn:
** A young Comic Book Guy is heard saying "...and that's why ''Literature/LordOfTheRings'' can never be filmed."
** While splitting up their possessions, Homer takes all the stuff that will be worthless in the following decades (vinyl [=LPs=], Enron stock, VHS tapes) and gives Marge all the stuff that will be successful later on ([=CDs=], Apple stock, [=DVDs=]).
* {{Jerkass}}: Marge's college professor, Stefane August. He manipulates Marge into dumping Homer for him and acts like he's a revolutionary feminist, but really he's just a jerk who would sleep with one of his students.
* MistakenForJunkie: Marge unintentionally destroys an insulin syringe, thinking that Homer was taking narcotics and was dying from an overdose.
* TheNineties
* SecondActBreakup: The third act focuses on Marge being with Stefane and Homer going through a deep depression.
* ShoutOut: The title is an allusion to ''Series/That70sShow''.
** The scene where Marvin Cobain calls his cousin, Kurt Cobain, telling them about Sadgasm's sound, is a direct parody of the scene from ''Film/BackToTheFuture'' where Chuck Berry's cousin Marvin calls Chuck to tell him about Marty [=McFly=]'s new sound.
** Sadgasm's songs are reminiscent of Music/{{Nirvana}} songs, with the exception of "Margerine", a parody of "Glycerine" by Bush. Weird Al parodying Sadgasm is a reference to his Nirvana parody. Kurt Loder reporting their breakup is a reference to him reporting on the death of Music/KurtCobain on MTV.
* StudentTeacherRomance: The whole plot revolves around Marge being involved with one of her professors.
* UngratefulBitch: Marge was at her worst in this episode, what with ditching Homer for her professor when Homer was paying for her tuition by working a job he hated.