A horse that barges is one that continually pushes you out of the way.
Horses often barge because they are impatient to be let out, to be fed, or to get to other horses.
Some horses develop the dangerous habit of barging past their handlers as soon as the stable door or gate is opened This sort of behaviour shows a lack of discipline and disrespect for the handler. If you don't take control - you could get hurt. What you can do. If your horse has taken to pushing past you every time you open the stable door or open the paddock gate, be ready next time with a piece of plastic pipe or whip. This should break the habit over a week or so.