Now watermelons are in season in Russia and are pretty popular as a street selling food. The shop owners sometimes build such fenced storage right in the middle of the city to lock the fruit overnight. The netted fences don’t allow the watermelons be stolen. At least this was their purpose. However as reported homeless people have found their way to the sweet fruit: they use the knife to cut pieces of the fruit of exact size as the squares in the netted fence, then just pull it out and eat. This way watermelons get those red spots all over the storage.