Justin Bieber ripped Patrick Carney on Twitter Tuesday, after the drummer-whose band The Black Keys took home four Grammys on Sunday night---told TMZ that Bieber was not a musician.

When asked on Sunday night after the 2013 Grammy Awards whether Bieber should have felt snubbed by not receiving a single Grammy nomination, Carney asked TMZ "He's rich right?"

"Grammys are for like music, not for money...and he's making a lot of money' Carney said as he was leaving the awards. "He should be happy."

But Tuesday's tweet where Bieber rips Carney saying "the black keys drummer should be slapped around haha," would seem to imply that the Biebs wasn't amused.

My mid-afternoon Wednesday Bieber's throwdown on the social networking site had been retweeted nearly 50,000 times.

Bieber didn't attend the Grammy's Sunday night, instead attempting to offer his fans alternative video content online. His streaming service was shut down twice by fan demand.

"Since nothing is working and im super upset i feel i gotta make it up to u. i should post a new song on twitter so you can still be excited," Bieber tweeted before abandoning the project.

Instead he appeared shirtless in a YouTube apology video to fans.

No response has been heard yet from Carney about Bieber's rip on Twitter.

Leaving the Grammy Awards after the Black Keys big win, Carney had his normal laid-back demeanor. What does he want to do now?

"I want to open a Whataburger," he said.