A big part of WandaVision's success has been the viral music from the series, with "Agatha All Along" becoming a surprise smash song, but now the show has become so big that it has even turned a 27 year old novelty children's song into a viral sensation!
The star of WandaVision, Elizabeth Olsen, was once the subject of a "diss track," a song designed to insult/complain about (or "diss") another person (the term was coined and popularized by hip hop artists during the late 1980s/early 1990s, with Ice Cube's trashing of his former group, NWA, in 1991's "No Vaseline" being one of the most famous examples, but the concept has been around for years. John Lennon's 1971 song, "How Do You Sleep?" about his former Beatles bandmate, Paul McCartney, is another notable example). The funny thing about the song, though, is that it was by her older sisters, Mary Kate and Ashley Olsen.
Decades before WandaVision was riffing on popular sitcoms though the Scarlet Witch's magic in Westview, Elizabeth Olsen's older sisters, twins Mary Kate and Ashley Olsen, were themselves part of an actual hit sitcom, Full House. From 1987-1995, the two sisters jointly played the role of Michelle Tanner, the youngest of the three Tanner daughters who were raised by single dad, Danny Tanner, with an assist from his best friend and his late wife's brother, who both moved in to help raise the three young girls in a "Three Men and a Baby" situation.
While Mary Kate and Ashley were literally just infants when the show began (not even a year old), they defied television expectations by continuing in the role as they aged and once they were toddlers, they somehow became the most popular character on the show, with catchphrases like "You got it, Dude," "You're in big trouble, mister" and "No way, José!"
In 1992, the two were so popular that they starred as individual characters in an ABC holiday movie, To Grandmothers House We Go. The movie was such a big hit that the Olsens' parents formed DualStar, a production company that produced more TV movies starring the twins, but more importantly, direct-to-video movies with the Olsens (these videos grew so popular that the girls then debuted a fashion line, as well, and by the time Mary Kate and Ashley took control of DualStar on their 18th birthday, they were already worth around $100 million).
There were two particular video series released by the twins. One was called You're Invited to Mary-Kate & Ashley's, and it featured parties thrown by the girls where they would sing with their friends and the other was called The Adventures of Mary-Kate & Ashley, where the twins would solve amusing mysteries. Since the actual plots of these mysteries were only 15 minutes long, and the videos were a half hour long (an industry standard minimum length), the rest of the videos would be filled with music videos by the twins singing various novelty songs.
In their very first The Adventures of Mary-Kate & Ashley video, "The Case of Thorn Mansion," in 1994, the twins included their "diss track" of their younger sister, Elizabeth (then five years old while her sisters were eight), "B-U-T-T Out."
Obviously, unlike an actual diss track, "B-U-T-T Out" is meant as a joke and not a genuine attack on their little sister. It's more just to capture that general feeling of annoyance when your younger siblings wants to tag along. Young Elizabeth ("Lizzie" in the song) is shown playing various musical instruments and pouting at her sisters' refusal to include her. The chorus was, "B-U-T-T Out! B-U-T-T Out!
Turn your tiny frame about and B-U-T-T Out!
You better, you better, you better, you better
B-U-T-T Out!"
Perhaps the "harshest" lines were:
We'd rather be picked up by a twister
Than tagged along after by a sister
We'd rather eat french fried garden snails
We'd rather lose all out finger nails
Or bathe in a pool of slime!
Fans rediscovered the video online and it has become a surprise viral sensation during WandaVision's run on Disney+.
Source: YouTube