is an acronnym rather than a word, it stands for london fixed gear and single speed. A cyber populus of bike nerds and fixie hipster skidders who sit on line and blag to eachother instead of doing work at their actual jobs.
The lfgss is a fantastic source of entertainment and enlightenment provided the user can "thick skin" their way through the jibes and online slagging the community greets most newcomers with.
Most probably the largest and definately fastest growing online community of single speed and fixed riders in the UK. The members are constantly being "found" by the wider public and those wishing to commecialise and gain financial reward for their various non-bike related companies. These are sometimes met with hostility so beware.
The LFGSS of course!