An “ego wall” is where people flaunt their political connections by displaying photos of themselves with more famous people.
The phenomenon is also sometimes called the “glory wall” or “me wall.”
Mike Nichols: “The ego wall is where the politician hangs pictures of himself or herself beside other, more famous politicians. It is why, when a president flies into town, there are usually about 495 lesser politicians waiting on the tarmac. They want a picture for the ego wall.”
Slate: “Lobbyists have glory walls in the office to impress clients. Staffers have them to impress other staffers. Socialites have their glory walls on the piano… For aspiring Washingtonians, the glory wall allows you to brag about conversations you never really had with the chief justice and intimacies you never really shared with the president.”