Box jumping is when you glitch inside of a box to fly across levels. To perform a Box jump you have to a wooden box and pick it up. Then push it against the floor or a wall (A wall preferably) Then you can walk into it until you're camrea is in the middle of the box. Then let go of the box and you'll begin flying across the map at extreme speeds. Side-Note: Box jumping is extremely uncontrollable. Side-Side-Note: Box jumping can be performed with other physics objects like the barrel but cannot have prolonged flight as in the case of Box Jumping as you usually get kicked out of the barrel or other object and usually can only be performed while the object is being pushed against a wall. This is called Prop Hopping.