When a person who is fully aware that you are wearing earbuds and listening to music, but completely ignores them, thus continuing their conversation undeterred.
Guy 1: Hey should i drink Coke or Pepsi...
Guy 2: Listening to music
Guy 1: Well what do you think?
Guy 2: did u say something?
Guy 1: Yea i want to...
Guy 2: What are you, Earbud blind? go away.