A place where you might rest your (testicle)bag. Often upon the chin or forehead or across the nose of a nearby trog. Also used as an even more derogratory term for an idiot or douche bag.
Example 1). "Dude, this bag stand is going 50 MPH in the fast lane.. I want to end his stupid life"
Example 2). "That sluts face is the perfect bag stand." "indeed"