Lori and Reba Schappel are the world's oldest conjoined twins. How do they manage to lead independent and fulfilled lives and how does society react to them?To some parents of conjoined or Siamese twins, leaving them joined is anathema, yet others would not dream of risking separation. Siamese twins force us to reassess some of the values that are central to society privacy and individuality. Yet Lori and Reba Schappell prefer to stay together.