When someone brings something up with the illusion of talking about you but they endlessly speak for the entirety of the discussion only of themselves.
Leon: “Have you seen any good movies lately Bill?”
Bill: “Not really”
Leon: “Oh well this weekend Bill I watched ‘Shooter’ on Netflix and boy was it amazing. I really liked the part about……”
On and on and on they chat about their side of the “subject” only pretending to have ever been interested in your opinion. This is the desired outcome of the prop subject; self-centered expression.