What does joint size mean?

When a female says "I am a size 4" what does this mean? is this is a body size and what are the measurements?

• what defines a female body size in a number? give me a chart.

• Answer:

  It depends. If its a female u met online it means shes an 8-10 which is average to slim. if she is asian it means she is rugby built. if your looking at her it means she is model bordering bulimic and if she isnt then it means she is a liar. Its a dress size. What defines a female body size in a number 1-2 like a skeleton. 2-4 annoyingly obsessive about her weight. 4-6 petite or neurotic 6-8 naturally thin or a young boyish 8-10 female. 10-12 curvy and redonculous.. 12-14 bouncy 14-16 proud of it 16-18 not proud of it 18-20 excessive self esteem issues 20-22 limits trips outside the house 22-24 limits trips outside the room 24-26 limits time and distance from a privat fridge 26-28 has setup a habitat with somekind of enabling attendant 28-30 glandular 30+ has an account at the local crane higher..