When you hear the words "celebrity feud," Kathy Griffin and Renée Zellweger probably aren't the first two names that come to mind. But you'll know better after watching Griffin's latest comedy special. During her show 'Kathy Griffin Does the Bible Belt' (Tue., 10PM ET on Bravo), the comedienne reveals the details of her ongoing feud with Ms. Zellweger. And things get a little nastier than you might expect.

Griffin seems to admit that Renée is a very nice person -- but she just can't resist relentlessly mocking her. First, Kathy confesses that she once called the actress a "sweaty puffy coke whore." Yikes! In response, the very polite Zellweger sent Griffin a bouquet of flowers with the message "Warmest Wishes," in an effort to show that she was in on the joke.

You might think that this would have ended Kathy's comic feud with the actress. But if you thought that, you would be wrong. After telling the bouquet story, Griffin then describes Renée as looking like a "f#cked up prizefighter." Yikes again! It seems doubtful that Kathy will be getting any more flowers from her celebrity "pal."