If someone tells you to "Get your head out of your ass," it means that you have to start paying more attention to what's going on around you. It could also mean that you have to stop being so consumed with yourself, and your own well being, stop being so conceited.
John: I am so good at painting, I must be like Michelangelo!
Matt: Get your head out of your ass, John!
Jack: (Runs into someone at store, cause he's texting)
Man: Get your head out of your ass, and start paying more attention!
Matt: Get your head out of your ass, John!
Jack: (Runs into someone at store, cause he's texting)
Man: Get your head out of your ass, and start paying more attention!
by cowboymatt1 October 24, 2014