The feud between Kathy Griffin and Demi Lovato started last month when the comedian referred to the young singer as the "douchiest" celebrity she'd ever met.
Things rapidly escalated from there and Demi even had to apologize for death threats that some of her hardcore fans directed at Griffin via Twitter.
Never one to back down from a fight (even when the other person has issued a formal apology), Griffin read off a list of vicious tweets from "Lovatics" on Howard Stern's radio show.
"I will burn your house down," read one of the tamer tweets.
At the beginning, Stern and Griffin were still laughing at the situation. Things got more serious, though, as the anti-Kathy tweets became more vile.
"I will come to your house and rape you #LovaticsWantYouDead," read one particularly insane tweet. "Us Lovatics will kill you in your sleep," said another.