A113

A113 (sometimes A-113 or A1-13) is an inside joke, an Easter egg in media created by alumni of California Institute of the Arts, referring to the classroom used by graphic design and character animation students including John Lasseter and Brad Bird. Bird first used it for a license plate number in the "Family Dog" episode of Amazing Stories. It has appeared in other Disney movies and every Pixar movie.

Bird said, "I put it into every single one of my films, including my Simpsons episodes—it's sort of my version of Hirschfeld's 'Nina.'"

Classroom A113 is currently the first year graphic design studio.