Bull polishing
（重定向自Spit shine）
Bull polishing, bulling, spit polishing or spit shining refers to a method for polishing leather products in such a way as to give an extremely high shine effect. It is commonly used in the military as a traditional method of presenting leather accessories (such as a Sam Browne belt) and boots for inspection. The finished effect should leave the surface of the leather as reflective as a mirror.