We don't see how Kenny dies in the episode, but he is visibly dead near the end of the episode.

We learn that Token's last name is Williams.

Token: Mom? Dad? Why do we have a bigger house than everybody else in South Park?
Bob: Well, because we have more money, son.
Token: I know. But why?
Bob: W... Well, because we went to graduate school and therefore have more lucrative jobs than most people in town. For instance, your mother is a chemist for a pharmaceutical company, whereas your friend Eric Cartman's mother is a crack whore. One pays more than the other.

Token: I'm just so happy you guys moved into town. You see, I used to be the only rich kid. All the other families here are kinda low to middle-income.
Lisa: Why? What happened to all their money?
Token: Well, they never really had any money.
Lisa: Well, then, why don't their daddies just act in a movie?

At the beginning of the episode when Butters is at the front of the class giving his volcano report, you can also see him seated in the classroom.

Cartman: All the rest of us have to buy our clothes at J mart! Have you even been inside a J mart, Token?

J Mart is a spoof of K Mart, the discount department store.

Cartman: (holds up the DVD of The Lion King) Oh, well, let me take this disk up to the Enterprise and see if Captain Kirk can decrypt it.

The Lion King (1994) is a Disney movie about the life of a young lion who must come to realize his place on the African savanna.

The Enterprise and Captain Kirk are references to the sci-fi television series, Star Trek.

Token: (to Frederick) And this is the room where my mom and dad keep their original Van Gogh painting.

Token is referring to artwork by the Dutch post-impressionist painter, Vincent Van Gogh.

Lion 2: You're not becoming a lion. The only way you can do that is to see Aslan.

Aslan is a lion character from The Lion, The Witch, and the Wardrobe, a fantasy novel for children written by C. S. Lewis.

Cartman: (to Ms. Choksondik, under his breath) I'll make you eat your parents!

This is a reference to the episode from earlier this season, "Scott Tenorman Must Die."