"We do have very normal lives,” says one of Schappell conjoined twins, who are celebrating their 50th birthday

From FOX News:The world's oldest living conjoined twins have defied doctors' predictions and reached their 50th birthday.George and Lori Schappell, who are joined at the head, celebrate their special day Sunday.And the pair is marking the landmark birthday with a trip to London.Remarkably, the twins are able to live very different and separate lives, with Lori having had relationships and George,