Chapter 15

When Sam got home, Marcie's red Miata was once more parked in the driveway. There was no sign of Joan or Marcie downstairs, but faint sounds came drifting from Joan's room. With a private grin Sam climbed the stairs and knocked on the door.

"Is that you, Sam?" Joan called from inside.

"Yeah, it's me," he answered.

"Well, what are you waiting for? Come in."

Sam entered to find Joan and Marcie in bed together, their clothing scattered about the floor. Joan was propped up on a couple of pillows, cradling Marcie in her arms; Marcie suckled at one of Joan's tits, for all the world like a baby nursing.

"Hey, Sam," Joan said, stroking Marcie's hair. "How was the test?"

"Easy," Sam said. "Hi, fuck toy."

Marcie didn't stop, but she gave a little moan at his greeting, which sent a tremble of pleasure through Joan's frame.

"I see you two have been busy," Sam commented.

"Yeah, well, we didn't have you to entertain us," Joan said. "Oh, that feels good, baby... do you want to join in?" she asked Sam.

Despite his recent session with Vanessa, Sam was hard again at the sight of the two girls making out. He answered his sister by dropping his book bag and pulling off his shirt. When he was completely nude he approached the bed and pulled back the covers, revealing the two lovely girls. Joan looked up at him with an inviting smile, turning slightly to stretch out her long dancer's legs. Marcie was lying on her side, her arms around Joan's waist, while she licked and sucked at the other girl's nipples. Sam admired them for a few moments, two beauties in the flush of sexual heat. He sat on the edge of the bed behind Marcie, easing a hand between her legs. She moaned again at his touch. Her pussy was very wet; she was clearly aroused and ready for him. She rolled more onto her stomach and spread her legs.

Sliding closer to her, Sam put the tip of his cock against Marcie's opening and gently pressed in. She groaned in pleasure, pausing in her attack on Joan's tits to say "Oh, God, that feels good, Sam!"

"Feels great to me," he grunted, letting his weight come down across her body. Marcie was now pressed tightly between Sam and Joan. Joan tilted Marcie's chin up for a kiss, then leaned past her to kiss Sam, her hands moving on Marcie's body. Sam's tongue traced the line of Joan's lips, before drawing her own tongue into his mouth. Marcie was making small sounds of pleasure as Sam's cock thrust repeatedly into her cunt and Joan's fingers caressed her.

"Oh, oh, please, fuck me, fuck me," Marcie pleaded. "I, I, I need it so badly... oh, it feels so good... "

Sam continued pumping in and out of her, but his attention was focussed on Joan as they made out. Joan nibbled at his ear, while his lips nuzzled her throat. Joan's hands had found Marcie's breasts, and she gently tweaked and pinched her nipples in time to Sam's thrusts. Marcie was almost incoherent with pleasure now, low moans coming continuously from her. Without pausing in his movements, Sam wriggled one hand under her; his finger reached Marcie's clit, and stroked. This was all that she needed to push her over the edge; Marcie half-screamed as she came, sweaty body thrashing between her two lovers as they continued to kiss each other passionately across her.

Sam had not yet come. He let Marcie's orgasm ease before withdrawing from inside her and letting her roll over, panting with exhaustion but eyes glowing in ecstasy. Seconds later he was on Joan, her legs spread wide to receive him, and thrust deeply into her willing cunt. Ready as she was, Joan still gasped as his hardness filled her.

"Oh, damn, brother," she whispered intensely. "I love you so much; I love holding you, and kissing you, and fucking you... "

"I love you, too, sis," Sam said back. "You're mine... you'll always be mine... "

Joan groaned her acceptance as Sam claimed her. She didn't know if there would ever be other men for her; but she knew, whether there were or not, a part of her would always be Sam's, that she would be his whenever he wished. He was her brother, and her lover; but he was more than that. He was something she didn't even have words for, and she was his.

Sam came, then, and Joan came as well, an eruption of raw sexual power through her body, pulling her in, obliterating thought. She floated on a tide of pleasure, filled with a sweetness that was more than just sex. Joan gradually came to herself, feeling her brother's warm weight on her, his softening prick inside her. Marcie lay beside her with a look close to awe on her face. Joan felt bathed in love, warm and relaxed and content.

"It's all right, Marcie," Joan said, feeling moved to offer some kind of reassurance.

"It looked more than just all right," Marcie said. "Do... do I look like that? When Sam is fucking me, I mean?"