Continuity: The amount of blood on Deja's face and shirt changes from shot to shot.
Factual errors: Remy refers earlier in the movie that it is 1995. The "Peace Fest" that is advertised on the flyers is slated to take place on Saturday, November 15. For it to be a Saturday and be on November 15 it would either have to be 1986 or 1997.
Continuity: The position of the frozen broccoli that Malik uses to "ice" his face with changes between shots.
Miscellaneous: Immediately after the red Volkswagen beetle is flipped and the three girls are walking along the sidewalk, it is raining in the background but not on the girls.