If there was a list of people (and robots) that should avoid rapping -- and maybe there ought to be -- C-3P0 would be sitting pretty far up towards the top. Fluent in six million forms of communication and not an ounce of flow.
Buzzfeed explains the clip's bewildering existence:
In 1986, to help promote the soon to be open Star Tours ride at Disneyland, ABC aired the TV special A Vacation In Space. The special gave viewers a look at some of the behind-the-scenes footage on the making of Star Tours, as well as the history of space travel and space-related films.
But somewhere -- amid the references to the lack of gravity in space and the other references to lack of gravity in space -- there's something inexplicably catchy in there. No one will blame you if you listen to just one more time. And one more time. And then just one more time after that. [Everything is Terrible via Laughing Squid via Buzzfeed]