It's hard to know what good will come out of this "feud," but it doesn't seem to be over.

Not too long ago, TMZ had a short conversation with Black Keys drummer Patrick Carney, asking if Justin Bieber should feel snubbed to not get a Grammy nomination. Patrick said JB should be happy, since the Grammys are for music, not money, and Justin is rich. Justin responded on Twitter, saying, "the black keys drummer should be slapped around haha."

Justin's Beliebers attacked Patrick, so he responded by mocking Justin with a "Justin Bieber Carney" Twitter profile, changing his picture to Bieber in glasses and making his bio, "official twitter for the actual verified Justin Bieber DOS virtual buddy." He later changed his bio back to "official twitter for the actual verified Patrick Carney (formerly Justin Bieber). Drummer in the Black Keys." He tweeted on Sunday, "Justin is gone now. DNA recombo unsuccessful. I will try again soon though!"

However, before that note, he retweeted many notes from angry Beliebers, including:

• "tremendous're stupid because you do not notice your fucking life, ahh c not got, you need to be alguin justin by god MATURE"

• "I bet I run into Patrick Carney somewhere random in Hollywood. I also bet I sock him in his mouth and vagina."

• "lol your gonna get killed retard"

• "someone needs to take a pencil and shove it so far up your ass that you can't walk for months"

Sheesh. With "fans" like those, who needs overreacting Internet bullies?

Sources: @PatrickCarney, NY Daily News