who collapses under the extra weight of the toothpaste on his toothbrush, which is dispensed by Smithers. The camera then zooms past Moe's Tavern into the Kwik-E-Mart where Apu is secretly changing the expiration date on a carton of milk from 2006 to 2008. The camera cuts to Springfield Elementary where Jimbo, Dolph and Kearney are hoisting Martin Prince up a flagpole by his underwear and saluting it as if it were a flag. The camera then zooms through a window of the school where Bart is doing the chalkboard gag which is "I will not illegally download this movie", a reference to piracy before quick-fading to the popular 90s band Green Day who are hosting a concert at Lake Springfield, playing their rendition of "The Simpsons Theme". "He Loves to Fly and He D'ohs" was the first new episode to air following the release of The Simpsons Movie, and the episode's opening sequence is a callback to the film. Bart writes "I will not wait 20 years to make another movie" on the chalkboard and skateboards through Springfield, which is still recovering from the dome incident. Several movie characters reappear, including President Schwarzenegger, the Multi-Eyed Squirrel, Colin, Russ Cargill, and the Medicine Woman. Also seen is that the Simpsons' house is still under construction and the silo is strapped to Homer's car. Plopper the pig is also featured for the first time in the series, during the couch gag and Homer refers to him as "my summer love". "Tik Tok" A special opening sequence, featuring the cast lip dubbing to Kesha's single "Tik Tok", was animated for the season 21 episode "To Surveil with Love", which aired on May 2, 2010 to promote "Fox Rocks" week. This is the first canonical episode in the show's history that does not feature "The Simpsons Theme" in any capacity, apart from "Simpsons Roasting on an Open Fire". The sequence starts with Lisa waking up and then grabbing Milhouse's glasses. It then shows Groundskeeper Willie brushing his teeth with whiskey. He then gives it to Mrs. Krabappel who drinks some while they walk into school before Mrs. Krabappel grabs Willie and drags him into a classroom. In the hallway Sherri, Terri and Martin are having pedicures while Ralph is playing in the lost and found box. Principal Skinner and Superintendent Chalmers walk past. The three bullies stick their heads out a classroom and