Kiwi!

Kiwi! is a 2006 computer-generated animation short film created by Dony Permedi as his Master's Thesis project at the School of Visual Arts in New York City. The music was composed and performed by Tim Cassell. The short gained widespread popularity online after being uploaded to YouTube, becoming a notable Internet phenomenon. Unofficial versions of the film have been paired with the song "Mad World" by Gary Jules, and have circulated widely as viral videos.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.