Celebrities are used to having their dirty laundry aired in public. But when it comes to their private fights and feuds between confidants and frenemies, you would think that they would relish in the small amount of privacy they still had left to hold on to and duke it out behind closed doors.

Not a chance. Many celebs (and D-list hanger-ons) take to Twitter, everyone’s favorite 140-character channel of expression, to air their grievances with their peers. Some celebrity twitter feuds just happen to be a little more insane than the others.

Let’s take a look at the 10 craziest that Twitter has had to offer:

Rob Kardashian vs. Rita Ora

Theirs was a love affair for the ages…or at least a few months. After the lovebirds played coy about their relationship, never really confirming or denying the dating rumors, their status was revealed in a large way – by Rob declaring it over via Twitter.

It was a manic, unhinged flurry of tweets that revealed Rob had discovered that Rita had been cheating on him throughout their entire relationship – with 20 guys, no less. The tweets were an incessant string of accusatory attacks toward Rita calling the singer out for breaking his heart; the more disturbing notes named her as a whore. Rita’s only response in the whole exchange? “Rob had a lame dick.”

Winner: Rita Ora