Card stunts are a planned, coordinated sequence of actions performed by an audience, whose members raise cards that, in the aggregate, create a recognizable image. The images they create can range widely and, through careful planning, the same cards can create a number of different images by systematically changing how the cards are held up. Although card stunts are now performed at a variety of events ranging from sports to political rallies, the card stunt is closely associated with American football, particularly college football, as well as football (soccer), where it can form part of a tifo. The North Korean mass games Arirang Festival, however, were the first to extend the card stunt to an art form, using flip-book cards to produce enormous hour-long animated sequences.

The University of California, Berkeley is a public land-grant research university in Berkeley, California. Founded in 1868 and named after Anglo-Irish philosopher George Berkeley, it is the state's first land-grant university and the founding campus of the University of California system. Berkeley is also a founding member of the Association of American Universities. It has been regarded as one of the top universities in the world.