Justin Bieber Justin Bieber

The feud continues!

Black Keys drummer Patrick Carney is getting back at Justin Bieber after the young pop star blasted him on Twitter. What's the best way to retaliate? Carney changed his Twitter name to "Justin Bieber" and tormented the Biebs and his fan base left and right. Carney has since changed his name back, but his profile now includes "formerly Justin Bieber."

Justin Bieber blasts Black Keys drummer

After one fan told Carney he was making himself look pathetic, he tweeted, "We have a lot in common." Another fan told him he needs to reevaluate his existence, to which he replied, "My mom said the same thing." And, of course, Carney didn't miss a chance to use the word "swag."

The feud kicked off after Carney joked to TMZ about Bieber not being nominated for a Grammy. Bieber retorted by tweeting that Carney should be "slapped around."

Hey Biebs, your move!