Continuity mistake: When LoveBurger leaves the stage, a raucous teen jumps onstage and blares Paradise City from his boombox. William recognises the song and jumps over to the stage. When he jumps on, he knocks the other guy over. Watch as the other guy falls off the stage, as a microphone on top of the stage falls over and smacks the camera at the top of the screen.
Continuity mistake: When Mike goes with the two girls who said he was the hottest guy in school and they say he said they were skanky, they were sitting on a bench, and at the next scene he appears sitting on a swing. [It is both a swing and a bench. If you watch Mike sit down, you can clearly see that it is a swinging bench-type chair.]