A man is sitting on his porch
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A man is sitting on his porch when he notices two blondes working down the road. They both have shovels. One of them digs a hole and the other immediately fills it in. The man watches them for a few hours and finally approaches them, "You guys look like you're working hard. But I'm not sure what you're trying to accomplish."
One of the blondes replies, "Well there's usually three of us, but the one that plants the trees is sick."