Here's a weird one for you: Russian surgeons say they found a fir tree growing inside a man's lung. The doctors thought the growth was a tumor and were performing surgery to remove it when they realized it was a tree.
Image: The Daily Mail
"I thought I was hallucinating," one of the doctors tells the Daily Mail. "I asked my assistant to have a look: 'Come and see this . We've got a fir tree here.'"
The surgeons say the pine needles were poking through the man's capillaries, which was causing his pain.
More photos at the Daily Mail.