As they lay there breathing hard, their bodies not moving except for Brian's steady, slow fucking motion, slipping his limbering cock in and out of her raw pussy, they didn't see who entered the room. Brian froze as he heard the familiar voice.

"Well, what's going on in here?" Gary asked, his figure framing the doorway.

Brian looked over at his friend as a rush of guilt sped through his body. He couldn't help but notice, however, that Gary was smiling, his eyes taking in the two naked bodies.

"Look, I'm sorry," Brian began, but he was interrupted by a wave of the hand from Gary.

"SO you've been fucking my little sister, huh?" Gary asked, walking into the room. "Is there any of that sweet pussy left for me?" he added, looking at Tanya.

"There's plenty for both of you!" Tanya whispered.

Brian stated in amazement as Gary unzipped his jeans and flopped out his growing cock. He crooked his finger and motioned for his sister to come over to him. She got out from under Brian and sat on the edge of the bed.

"I'll meet you halfway, big brother," she whispered, holding out her hands.

Brian watched in fascination and shock at what then took place. Gary walked over and nuzzled his cock into his sister's face. She clasped it with both hands and placed between her tits, and then pressed her firm mounds together, caressing Gary's meat.

"Ummmmmm," Gary moaned, feeling her hard nipples press against the shaft of his prick. "Fuck me, sis!" he moaned, as she began jacking his cock with her tits.

Brian was still stunned, but he felt a hot throbbing between his legs as he viewed the scene before him. Gary was standing with his legs apart, his head thrown back, while his sister rubbed his gigantic cock around between her tits. She lowered her head and grasped his cockhead between her lips and slicked it up with her spit, cock sucking and tit fucking at the same time.