This page contains trivia for "The Poor Kid". Remember, trivia must be factual, provable, and it is always best to cite your source for not-so-obvious trivia. If you would like to dispute a trivia point, please discuss it in the article comments.
Matt Stone and Trey Parker officially confirmed the name of Kenny's sister to be "Karen", after years of fans referring to her by that name.
Kenny, as Mysterion, shows his fighting ability, and was able to take out a larger girl with extreme ease, as well as kicking her in the head whilst jumping.
It is revealed that Liane Cartman works two jobs, however it isn't revealed what those jobs are.
We also learn she no longer uses drugs, despite being referred to as a "crack whore" in "Pinkeye" and her own mother referring to Eric as the only person in the family who wouldn't use her money to buy cocaine in "Cartmanland".
This is the first time Kevin McCormick has spoken since the Season Two episode, "Chickenpox", made 13 years prior.
Mr. Adams closely resembles the character Zach Galifianakis played in the movie Due Date. His character Ethan Tremblay/Chase regularly thought of himself as a comedian and gave his audience signed photographs of himself.
The "Welcome to Greeley" sign is based on the real road sign that was defaced at 10th Street and 59th Avenue with the words, "the exact opposite of Hawaii".
The foster family is an exaggerated caricature of agnosticism, mocking the ambivalence of agnostic beliefs. It is also a parody of the narrative cliché of highly religious, abusive foster parents.
Jokes were repeatedly made in reference to the Penn State scandal. Cartman also points out that these jokes are retellings of ones made in reference to the Catholic Church's sexual abuse scandals.
Mr. and Mrs. Weatherhead bear similarities to many stereotypically abusive foster parents, such as the Dursleys from the Harry Potter series, and Aunt Sponge and Aunt Spiker from the book and movie James and the Giant Peach. This may also be a reference to the TV show The World's Strictest Parents
This is the first episode to refer to Dr. Pepper by name.
The beverage causing individuals to be deemed as "white trash" is Pabst Blue Ribbon, a real beer.
The end credits Nabulungi Hatimbi as a voice actor. This is a fictional character from the musical The Book of Mormon.
This is Kevin McCormick's first appearance since the episode "Sexual Healing".
Kenny reprises his alter ego, Mysterion, in this episode - however, unlike previous appearances, the episode focuses on both "Kenny" and "Mysterion", rather than just one or the other. This is also the first time Mysterion appears alone without Cartman as The Coon.
This marks the first time people have acknowledged Cartman's peculiar way of pronouncing certain words and names, such as pronouncing "Kyle" as "Kyahl", "Kenny" as "Keeny", and saying "meem" instead of "mom".
This is the third time Kenny's parents have been seen arrested. The first time was in the episode "The Wacky Molestation Adventure", when they were falsely arrested under the belief that they were molesting their kids, and the second time was in the "Mysterion Rises", when it was revealed that they were arrested at a Cthulhu Cult Meeting ten years ago.
The meth lab at the McCormick residence was mentioned in "Lil' Crime Stoppers", when the mob boss mentions that they will have to have the McCormick's start making their meth again.
When Jessica is kicked to the ground, she doesn't have a black eye. But when Mysterion pulls her head up, she does have a black eye. This was due to the black eye not being included in one eye animation - when Jessica is initially kicked, there is a black eye visible.
Kenny is unexpectedly killed by a "giant reptilian bird" moments before the end of the episode. His death is a reference to the "Then again, there could be a giant reptilian bird in charge of everything" part of the Agnostic Code back at the Weatherheads house..