Boy modification (or body alteration) is the permanent or semi-permanent deliberate altering of the human body for non-medical reasons, such as spiritual, various social (markings), BDSM "edgeplay" or aesthetic. It can range from the socially acceptable decoration (e.g., pierced ears in many societies), to the overtly religiously mandated (e.g., circumcision in a number of cultures), to corporal punishment, to provocative statement by the rebellious (e.g., tongue splitting).