(1) A viral video that has been auto-tuned, thus extending the life of the original work. Often times, as in the case of Antoine Dodson, the Viratuned video gains more popularity than the original.
(2) A non-viral video that has been auto-tuned, whereas the auto-tuned video goes viral. (Ex. news reports, political speeches, other crap that's boring as-is.)
Hey, have you seen "Double Rainbow Guy"?
You think that's good, you should hear the Viratuned version.
That homeless guy has a great voice!
Yeah, you should try to be the first to Viratune that. You'd get tons of hits!