The 300th episode of South Park. The number is slyly worked into the episode by having Randy celebrate that Tegridy Farms has made 300 (thousand dollars).
This is the first time that Randy Marsh and Liane Cartman interact.
During the CDC Child Immunization Challenge, Tweek is seen in the audience wearing his Gunslinger Outfit from the mobile game "Phone Destroyer."
The song that Randy sings on the float is "China" by Red Rockers.