LFG is the common abbreviation for "Lets fucking go" as opposed to "Looking for group". It was first widely used in the beer pong community and has since spread.

Looking for group.

L = looking F = For G = group

what more can i say, this is used in many mmorpgs today mostly WoW or world of warcraft for you people who still have lives there is also LFM which is looking for more

Screw all that nerdy stuff, LFG means only one thing:

LET'S FUCKING GO

that is all.

Looking for group- EverQuest lingo

This online gaming term has two separate but parallel meanings. The first, purposeful one is "Looking For Group". At the same time, they're also saying "Looking For Girlfriend", though the mating call often falls on deaf ears.