That? Is a 10-pound hairball that was living happily in the stomach of an 18-year-old woman. The woman apparently had a habit of eating her hair (also known as trichophagia). She went to the doctor after five months of stomach pain, vomiting after eating and a 40-pound weight loss.
Link [Photo: The New England Journal of Medicine]
http://www.neatorama.com/2007/11/29/ten-pound-hairball-removed-from-woman/