Well over a year ago we laughed out butts off at the mash-up featuring Justin Bieber and Slipknot, now we're laughing just as hard at the mash-up featuring Taylor Swift and Korn.

We want to know, which is your favorite?

While it takes a creative genius to be able to produce these mash-ups, it doesn't take a rocket scientist to pick their favorite.

Watch them both then vote for your favorite.

Justin Bieber/Slipknot Mash-up

Taylor Swift/Korn Mash-up