Doug the ugly New Zealand potato could be world's biggest

An ugly potato grown in New Zealand is also quite possibly the largest potato on record, weighing in at a remarkable 7.9 kilograms (17.4 pounds).

As the couple knelt down and began digging around the object, Colin wondered if it was some kind of strange fungal growth, a giant puffball. After Colin pried it out with his garden fork, he scratched away a bit of the skin and tasted it.

A potato.

"We couldn't believe it," Donna said. "It was just huge."

And not exactly pretty. Donna describes its appearance as more of an ugly, mutant look.