Talk About Meaning

(idiomatic, colloquial) Used to draw attention to the speaker's characterization of someone or something

Example:   Talk about a smooth talker! Did you hear his TV speech?
1912, Stratemeyer Syndicate, Baseball Joe on the School Nine Chapter 1
  "I should say yes," agreed George. "And talk about speed!" he added. "Wow! One ball he threw soaked me in the ear. I can feel it yet!" and he rubbed the side of his head reflectively.