"I can’t believe he gets away with this story," the movie star told "Late Night" host Seth Meyers.
The star, believing a woman is about to accuse him, said he wanted "to get ahead of this."
The birthday bash paid tribute to his legendary film career.
He entered the party to the "Rocky" theme.
"He's a classy guy," Kilmer said of his former co-star.
She really wasn't a fan of his cheesy chat-up line.
The actor, who starred with Kilmer in 1996's "The Ghost and the Darkness," says "things don’t look too good."
Cameron was jailed for possession of heroin and selling methamphetamine.