The three mean girls at the sleepover are played by the three main actresses from Riverdale (2017). Camila Mendes, Madelaine Petsch and Lili Reinhart.
In this episode it is said that Bart is afraid of horses but in episode 13 of the eleventh season he has a horse and is even a Jockey hale may have either gotten over his fear or that episode aired before this one.
When Lisa first sees all the horses the song from Jurassic Park (1993) plays and she is wearing the same outfit as Doctor Grant played by Sam Neill is wearing in the original Jurassic Park.
The name Bart uses when entering his Lyft ride is 'Juan Starnotip', which means 'One star, no tip'.