thumb|The door of Room A113
A113 and its variants are an inside joke and Easter egg in media developed by alumni of California Institute of the Arts, referring to the classroom used by graphic design and character animation students.
History
Students who have used the classroom include John Lasseter, Pete Docter, Chris Sanders, Tim Burton, Michael Peraza and Brad Bird. It has appeared in several Disney films and almost every Pixar movie. It also appears in South Park, Aqua Teen Hunger Force, Family Guy, American Dad!, Doctor Who and the SPA Studios animated film Klaus (2019). The first movie Bird used it in was The Brave Little Toaster (1987), in which he worked on as an animator.
See also
- List of Pixar film references
- List of filmmaker's signatures
- 42 – The Answer to the Ultimate Question of Life, the Universe, and Everything, first used by Douglas Adams in The Hitchhiker's Guide to the Galaxy, often used as an in-joke.
- 47 (number)#In popular culture
- Goroawase, a common Japanese language stylistic recourse in which numerical codes representing words are created with syllables that can be used to pronounce each numeral