Canadian pop singer Justin Bieber is the sixth most-followed person on Twitter, behind only President Barack Obama, talk show host Ellen DeGeneres, comedic actor Ashton Kutcher, recording artist Lady Gaga and legendary pop artist Britney Spears, according to Twitaholic. Over the weekend, he cleverly used his popularity to exact revenge on Twitter hacker Kevin Kristopik, who allegedly disrupted the account of Bieber’s friend, Ryan Butler, last month. Bieber shared Kristopik’s phone number with more than 4,500,000 followers on Twitter. The message has since been removed, but he allegedly tweeted, “Everyone call me [phone number removed] :) or text.” Since his fans believed that the number belonged to their beloved star rather than an unknown Twitter hacker, they flooded Kristopik’s phone with calls and texts, NME reports.

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