Its known to stand for many things, depending on where you are and who your with. Original Gangster, Ocean Grown, Old G, Original Genetics... and there are probably many other names people use. The one i believe is the most correct is Ocean Grown. Since the story goes that the first indica plants came to north CA from afgan and such. Food for thought at leastgreat info,, ive been wondering,, what does O. G. stand for? i see it in alot of strains and it got me curious.. og kush,, larry og,, etc etc..