Jokes and hijinks are baked into the spirit of rock 'n' roll, but some stars are masters of the form, pulling elaborate, hilarious pranks that reel in the unsuspecting public. As you watch your own back this April Fools' Day, have a look at Billboard.com's list of the 10 greatest pranks ever pulled by musicians -- from Coldplay's smelliness to Nicki Minaj's "nuptials" to John Mayer's alter ego. We bet you won't be able to hold back laughter.