The 41-year-old suffers from an extreme case of Ehlers-Danlos syndrome, a rare genetic disorder that has weakened his skin.
In most cases the disorder weakens people's joints and blood vessels and affects around one in 10,000 people. Mr Turner's strain is very rare.
He told ABC News: If you 'look at your own skin cells under a microscope, they'd be nice and round and lock in many places. But my skin cells tend to be more jagged, and don't fit together quite so well. The best way to describe it is I'm built rather like a badly woven basket, if you can imagine that, which will pull apart."
Luckily for Turner, his skin doesn't unravel when pulled — instead it stretches far enough away from his body as to allow him to carry up to three pints of beer at once on his belly flap.
Turner suffers from an extreme case of Ehlers-Danlos syndrome, a rare genetic disorder that can severely weaken a person's joints, blood vessels and in Turner's case, skin. The disorder, which most commonly attacks a person's joints, affects about one in 10,000 people. However, the odds of Turner's special variety of the disease are astronomical. Turner's condition was obvious from the day he was born. "The midwife said that I had very loose skin, and that was the only clue [my mother] remembers … I had loose skin."
Growing up, Turner loved sports, but injuries were constant until his condition was diagnosed at age 13.
"I used to get horrendous bruising when I used to take a knock, and a blood vessel would burst," he said. "The blood would just keep pumping and pumping, and there's no tension in the skin to hold the bleeding. The physicians just thought I was a hemophiliac."
Turner actively promotes the Circus of Horrors on British television, often accompanied by the circus ringmaster, who goes by the name "Dr. Haze