A Chelsea Grin (also known as
a Chelsea Smile or a
Glasgow Grin) is an act popular among British gangs which involves making a cut from the side of someones mouth all the way up to their ear. Due to the cut, it appears as if the victim is smiling. Thought to have originated from Glaswegian criminals but became popular among British
football hooligan firms, in particular the Chelsea Headhunters.
Dennis: Let's give
this cunt a Chelsea Grin!
Darren: Yeah alright, we can use
the knife my mother got me for my birthday.
Cunt: Please, no, not the Chelsea Grin, anything but the notorious Chelsea Grin!