Wiktionary
animutation
n. (context internet English) A form of Web-based computer animation characterized by unpredictable montages of pop culture images set to music.
Wikipedia
Animutation
Animutation or fanimutation is a form of web-based computer animation, typically created in Adobe Flash and characterized by unpredictable montages of pop-culture images set to music, often in a language foreign to the intended viewers. It is not to be confused with manual collage animation (e.g., the work of Stan Vanderbeek and Terry Gilliam) which predates the Internet.