Jimmy Kimmel's "Mean Tweets" bit is so funny and smart. Last night he did a musical addition. He had Demi Lovato, Ke$ha, Katy Perry, The Backstreet Boys, Pharrell, John Legend and others read out some of the meanest tweets that people had sent to them.
Take a look, it's hilarious.
What's the funniest tweet you've ever read?
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