Hidden Visitor: Just as Cartman is about to start his swimming lesson there is a shot of kids swimming in the pool with a visitor in the upper right corner.
The Mexican firework stand owner is wearing a Menudo t-shirt. Menudo was a Puerto Rican boy band that was popular in the 1970s. The band was the starting point for Latin singer Ricky Martin.
When the snow begins to melt around South Park, the music playing in the background is similar to that commonly played in the Peanuts animated specials.
When the kids are playing in the orchestra Kenny does not have a violin, just the bow.
This episode reveals that Pip Pirrup's parents are dead. This idea is later reused in Pip (2000), when Pip visits his parents' graves at the beginning.