The BBC reports an Italian woman found a live grenade in the sack of potatoes she was washing and preparing to peel:
"Olga Mauriello, from a small town near Naples, had put the potatoes into water to peel them when she discovered the mud-covered, pine cone-shaped grenade...
...Officers detonated the grenade on Wednesday in a park in the town of San Giorgio Cremano. It is thought to have come from a farm in France.
The grenade had no safety pin and was still active. It is believed to be a type used by the US Army in Europe during World War II."
Fortunately, Señora Mauriello was unharmed: physically, at least. I'd image it will be some time before she decides to whip up a batch of French Fries from scratch.