Two nuns pass through a farmer's market... Walking past a fruit and vegetable stand, they stop and see a sign reading: *""Fresh cucumbers for sale.""* They asked how much the cucumbers were, to which the seller replies ""3 for 2 dollars"". The first nun accepts the offer. The second nun asks why they're purchasing three, when there's only two of them. The first answered back, ""Well, we could always eat the third one.""