Justin Bieber is furious with The Black Keys drummer Patrick Carney.
The 18-year-old Canadian singer - who was upset about missing out on a Grammy nomination this year - has hit back at the 32-year-old rocker for insinuating he should be happy with his riches because his music isn't good enough to win awards.
Writing on his Twitter, the As Long As You Love Me singer said: "The Black Keys drummer should be slapped around haha."
His comment came in response to a remark made by Carney, whose band won three Grammy Awards on Sunday at an after party in the early hours of Monday morning.
When asked about Justin's Grammy snub, Carney told gossip website TMZ.com: "He's rich, right? ... Grammys are for music, not for money ... and he's making a lot of money. He should be happy."