Overview

• In a brief TMZ exchange, Federline said he is "not too worried" about Sam Asghari's opinion and called "professional father" a tagline he loves.
• Asghari made the quip last month when asked about the book, joking it could be a guide on being a "professional father."
• Federline said he is excited for You Thought You Knew, which is slated to be released on October 21.
• Publisher materials describe the memoir as a deeply personal account of his dance career and his marriage to Britney Spears.
• Coverage notes he has had full legal and physical custody of his and Spears' two sons since 2008, according to TMZ, and he declined to comment on a recent Spears Instagram post.