If you're one of those people who enjoys a good April Fools' Day prank, a word of caution: Do not pull any of these on your significant other lest you damage your relationship beyond repair.
Canadian five-piece vocal group Walk Off the Earth, who gained Internet fame with their YouTube cover of Gotye's 'Somebody That I Used to Know,' are back with a version of Taylor Swift's 'I Knew You Were Trouble.' Don't miss their unique a cappella spin on Taylor's track.