What's a lip dub?

Jacob Lodwick coined the term lip dub the 14 ok December of 2006.
The company did he found was Vimeo.
The agency what published the first lip dub was Connected Ventures.
In my secondary school, we are a lip dub with the song "I gotta feeling"
Lip dub is composed of the two words, lips and dubbing: synchonize your lips with a song.
Tom Johnson spread the invention to the world.
The first lip dub was Lip Dubbing: Endless Dream.