"It's ridiculous. I mean it's absolutely absurd," Stern told ETonline.com.
The Web site said it obtained the comments from Stern during a birthday party for Smith's 1-year-old daughter, Dannielynn, in Louisville, Kentucky, last Saturday. The party was held by Birkhead who has custody of the girl after Stern, Smith's lawyer and companion, initially claimed to be Dannielynn's father.
"Dannielynn is gonna read this garbage and it's almost like she's gonna have to get counseling from the age of 3," Stern said, according to a press statement from the Web site. The interview was scheduled to air Thursday on syndicated TV show "Entertainment Tonight."
Birkhead and an attorney for Stern previously indicated they would sue over claims made in Rita Cosby's book "Blonde Ambition: The Untold Story Behind Anna Nicole Smith's Death." Birkhead, who is Dannielynn's father, also has denied any encounter occurred.
Smith, a former Playboy Playmate, gave birth to Dannielynn a few days before the death of her son, Daniel, 20, in the Bahamas. Smith died of an accidental drug overdose in Florida in February at age 39.
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