when a person mentions something (usually in a subtle manner) that is completely unnecessary to the conversation, and serves only as a gateway for the person to indirectly brag about his/herself.
this is an extension of name dropping.
Todd: "My name is Todd, what's yours?"
Tucker: "Tucker, hey where are you from?"
Todd: "Louisiana, you?"
Tucker: "Oh, I'm from California *where I won the national championship 7 years in a row for Greco-Roman wrestling."