Happy Easter Disney

An Easter egg is a message, image, or feature hidden in software, a video game, a film, or another, usually electronic, medium. The term used in this manner was coined around 1979 by Steve Wright, the then-Director of Software Development in the Atari Consumer Division, to describe a hidden message in the Atari video game Adventure, in reference to an Easter egg hunt.

https://en.wikipedia.org/wiki/Easter_egg_(media)