Mainly, this is in reference to burial of the dead or burying someone who has died.
Widespread practice is to bury the dead in boxes six feet under the ground, i think for a variety of reasons, including prevention or discouragement of grave-robbers/scavengers/animals, as well as to give sufficient distance to stop any disease or parasite which might be targeting the body from spreading; at least among Western/European/North-American/Christian-based peoples anyways, I don't have a frame of reference beyond that and my own.
Figuratively, it might also be a competitive reference similar to "I am going to win and be so much better than you", ie: "I'm going to leave you six feet in the ground", as if the person was of no consequence in a competitive manner or will show no mercy to once the competition has started.
(Just FYI: We traditionally suspended our dead in square boxes among the branches and nooks and crannies of trees).
it means that you are dead and buried
The duration of Six Feet Under - TV series - is 3600.0 seconds.
Six Feet Under - TV series - was created on 2001-06-03.
Maya is Nate's daughter name in six feet under. Daughter of Lisa Fisher. His former wife.
There are many players under six feet tall, including Nate Robinson.
Six Feet Under - TV series - ended on 2005-08-21.
Six feet is termed to mean grave yard.
It means dead. Graves are traditionally six feet deep.
Six Feet Under - band - was created in 1995.
The duration of Manorama Six Feet Under is 2.3 hours.
Pilot - Six Feet Under - was created on 2001-06-03.
Manorama Six Feet Under was created on 2007-09-21.
Six Feet Down Under was created on 1989-05-04.
Six feet below the ground
The duration of Six Feet Under - TV series - is 3600.0 seconds.
no, she was under the floor, six feet under
Six Feet Under - TV series - was created on 2001-06-03.
Six acre-feet of water is about 1,955,109 US gallons.