A term used to define the common man/woman, simply "existing", without making any effort to make a difference in the world. Some people wake up, go to work, come home, watch TV/or play video games, then go to bed and repeat. This life is So much more than that.
To be a LukewarmSteak, is to be a walking talking ineffective, unsalted, bland piece of meat.

When you eat dirt for the first time and leave your family to build a shack in the woods