I wonder what has Larry Birkhead more ticked off. Rita Cosby's scandalous new book alleging that he was having an affair with a man, or that the man was Howard K. Stern! Birkhead, who was proved in April to be the biological father of former Playboy playmate Anna Nicole Smith's daughter, told Larry King Tuesday night that he will sue the author and publisher of the new book, "Blonde Ambition."
"I've instructed my attorney to sue Rita Cosby, the publisher and any source that spits out some of that false, defamatory information that's in there," Birkhead said on CNN's "Larry King Live." "If I were Rita Cosby, I'd be very concerned."
Cosby's book claims that not only was their an affair between the two men, but that an intimate moment between the two was caught on videotape.
Said Birkhead: "That's totally false and it's defamatory. I've heard the sources from that, and those sources are people that don't -- that haven't been in Anna's life and haven't even met me."
Birkhead said Cosby's comments are "crazy ... she says she's never seen the video that she reports in her book that exists, and now she's backpedaling, saying, 'How else could you explain two guys that are enemies now get along?' and trying to make sense out of something that she never verified in the first place."
Birkhead told CNN Cosby never called him to verify the allegations or told him she was writing a book.

Note: the US Magazine includes photos of Burke, Stern and Smith at The Abbey following the 2005 Gay Pride Parade where Anna Nicole was grand marshall.