Dude, you need a little more turf on the fairway!
From Dictionary.com
A surface layer of earth containing a dense growth of grass and its matted roots; sod.
An artificial substitute for such a grassy layer, as on a playing field.
A piece cut from a layer of earth or sod.
A piece of peat that is burned for use as fuel.
Slang.
The range of the authority or influence of a person, group, or thing; a bailiwick: “a bureaucracy... concerned with turf, promotions, the budget, and protecting the retirement system” (Harper's).
A geographical area; a territory.
The area claimed by a gang, as of youths, as its personal territory.
Sports.
A racetrack.
The sport or business of racing horses.
So, what's turf?