Mark ran through the forest. Though it was dark, he had no trouble seeing. All of his senses seemed sharper than usual, and the forest was alive with sights, sounds and scents, making his usual perceptions seem bland and empty by comparison. One scent in particular sent a sweet ache to his loins. A female was near, and her scent told Mark that she was ready to mate. He increased his pace, eager to find her... to make her his mate... to fill her with his seed. Soon, he reached a clearing. The female was there. Mark slowed, to avoid making her feel threatened and entered the clearing. There he found his own sister. --Mark sat up suddenly in bed. "Callie..." he gasped. It was the dream again. Mark had started having the dream about a month ago, and it was coming every night now. The teen got out of bed, discovering that he had somehow lost his boxers in the night yet again, leaving him totally nude. The dream had left Mark fully aroused. 'Another cold shower,' Mark thought with self-disgust.