A Glasgow smile (also known as a Chelsea smile, or a Glasgow, Chelsea, or Cheshire grin) is a wound caused by making small cuts on the corners of a victim's mouth, then beating or stabbing him or her until the muscles in the face contract, causing the cuts to extend up the cheeks to the victim's ears. This leaves a scar in the shape of a smile, hence the name.

The practice is said to have originated in Glasgow, Scotland but became popular with English street gangs (especially among the Chelsea Headhunters, a London-based hooligan firm, among whom it is known as a "Chelsea grin" or "Chelsea smile").

Tagging: For the My Little Pony fancharacter of the same name, see glasgow_smile_(character).

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Glasgow smile (Wikipedia)