The title of this episode, Betty and Veronica (Kristen Bell), is a reference to the Archie Comics characters Betty Cooper and Veronica Lodge. Veronica mentions Riverdale which is the town that the Archie comics are set in.
When Veronica (Kristen Bell) goes to Pan High she introduces herself as Betty, a transfer from Riverdale High School. This is a reference to Archie Comics, where two of the characters are named Betty Cooper and Veronica Lodge, and they attend Riverdale High School.
Noting Wallace's (Percy Daggs III) popularity as a basketball player, Veronica (Kristen Bell) does a dead-on impersonation of Sally Field's Oscar speech, right down to inflection: "They like you. They really like you!"
Veronica (Kristen Bell) says she "hopes there aren't Polish hookers" in the van where Wallace (Percy Daggs III) is keeping the goat. Kristen Bell is actually of Polish descent and speaks Polish.
Veronica (Kristen Bell) says Wallace (Percy Daggs III) lives on the corner of Pleasant Valley and Marigold in this episode, but in episode 2.3, Cheatty Cheatty Bang Bang (2005), we see in the phone directory his address is listed as 2414 Rialto Way.