Young Blonde Girl Reveals Her Black Stockings In The Bedroom With A Red Wall

In some cases, a wall may refer to an individual's debilitating mental or physical condition, seen as an impassable barrier.
Another common usage is as a communal surface to write upon. For instance the social networking site Facebook uses a wall to log the scrawls of friends. Users have gone on to create more advanced versions of the original wall, such as the application SuperWall.