When Bart stares open-mouthed at what is revealed to be Shauna's arm in Moe's Tavern, the view before the camera zooms out is a sight gag on the movie poster from the 1967 comedy-drama film The Graduate, which also features music by Simon & Garfunkel.
Homer's comment about how one of the episodes' endings "raised more questions than answers" referenced the various confusing elements in Lost.
Marge's reveal about the ending for Stranded regarding how "Firstly, the "mysterious island" is 15 miles from Long Beach. Al, Doorway Three led to Hell despite the series creators' repeated insistence it did not lead to Hell, and the entire Strandiverse, is a piece of gravel in a cosmic kitty litter box!", references the reveals made by the infamous series finale for Lost.
Other television shows found on the Butt-Whisperer 9000 that are parodies include:
The Little Lolo comic book is a reference to the Little Lulu comic strip.
The end of the episode zooms outward into the Universe, in the style of Power of Ten. This is an encore of the couch gag used in The Ziff Who Came to Dinner. It also acts as a brick joke to Marge's reveal about Stranded's ending.
Marge is kind to Jimbo, Dolph and Kearney in this episode, however in "The Blue and the Gray," Jimbo shouts an insult at her, and Marge backs up the car to tell him off, and the bullies run away. Marge being nice could have been because she had forgiven him, forgotten about the insult, or did not know that it was him that insulted her.
In the International/online version of this episode, the title screen gag is repeated from the episode "Elementary School Musical," and the chalkboard gag is "Teacher does not have to pay an "Ugly Tax"."
When Homer is saying "Watch whatever you want...," Milhouse is in front of a Transformers of the Caribbean movie poster and Bart is standing next to him. Then Homer, Bart and Milhouse keep walking. Afterwards, Homer looks round at them, but the boys are in exactly the same position as they were.
When Bart says "Doesn't anyone here realize I'm only ten years old?", a duplicate pair of eyes and nose can be seen for a split second.
Jimbo mentions that Bart has two baby teeth. However, he lost his last baby tooth in "Fat Man and Little Boy."
When Jimbo picks Bart up to see if he's a good chaperone for Shauna, he wipes a temporary tattoo off Bart's arm. The tattoo was not there before he wiped it off, and is not there when Jimbo puts Bart back down on the ground.
When Homer looks out the window to see Jimbo holding Bart upside-down by his ankles, as the shots change, the treehouse moves place slightly. The window also changes design.
When Shauna says, "Bart, here's my thank you gift," she has a bag on her right arm. In the very next shot, the camera moves behind her as she flashes Bart, but the bag disappears.