Standing in Lily's room

The moment Matt jumped, he realized his dad was somewhere he shouldn't have been. There were arms wrapped around his neck, breasts pressing against him, a mouth pressed against his, and two tongues inside his mouth. He opened his eyes and realized that instead of seeing his mom kissing his dad, he was mouth to mouth with his twin sister. He also realized one of his dad's hands was on her undeniably firm ass, the other cupping over her obviously bra-less B cup breast.

"God, daddy, I want to feel you inside me," she moaned into his mouth, "but I don't know if we have time."

The answer floated into Matt's mind, and although he had no idea if it was true or not, he replied,"We have time, if we hurry." He moved his hands to the bottom hem of Lily's shirt, peeling it up and off, even as her hands went to the buttons on his own shirt, working feverishly. Her skirt he merely pushed down past her hips, the fabric sliding down her smooth legs to puddle around her feet. Matt's own clothes fell to the ground to join Lily's as the girl stepped back, her feet leaving the skirt, her arms around him as she pulled him toward the bed.

Without looking, without hesitating, she sat on her bed, still moving upward, pulling him on top of her, spreading her legs around his hips. Matt could feel the heat pouring out of his twin sister as his cock bumped her shaved pussy. Overwhelmed, he raised his face from hers, looking down at her naked breasts. Lily didn't seem to notice, her own hands between them, grasping at his cock, pressing it against her pussy. "Come on, dad, we have to hurry! What if mom..."

Instinctively, Matt raised his hips, feeling the length of his cock slip against the wet heat of Lily's pussy until he felt her fingertips pressing the tip into her flesh. He lowered his hips, relishing the feel of his cock slipping into the flesh of his twin sister, losing his virginity vicariously inside his father's mind. He thrust down, his movement eliciting a hiss from Lily's mouth. "Oh, yesss," she moaned, locking her ankles behind his thighs.

He thrust again and again, looking into his sister's eyes as she looked back into their father's eyes. Matt could see the reflection of his father's face in her eyes, and the lust twisting her face as he fucked her. "Harder, daddy," she begged, and Matt obliged, using all the **** the muscles in this body would allow, her ass bouncing on her bed.

Matt felt a familiar surge, and tried pulling out, but Lily pulled him back. "I'm gonna cum," he gasped.

"And I want to feel it all," Lily purred.

He didn't have much choice after that, cum practically exploding from the tip of his cock to bathe his sister's insides. One shot, then two, then Lily's body responded. She lifted her head off the pillow, locking her lips on his to muffle her own cry as her legs tightened around him. Her pussy clenched around his cock, milking every drop of cum it could manage.

"God, that was good, daddy," she moaned, her legs squeezing one last time before relaxing, "but you better get cleaned up before supper."

Matt swallowed, then jumped back into his own body, which was laying on his bed and looking out the window. He couldn't believe what he had just done, and wondered how long it had been going on. He lay there for a while, replaying what he had just done, and was about to stroke his own cock when a knock at his door interrupted his memories. "Mom says supper is ready," Lily said through the door, and from the sound of it she didn't wait around for a response.

He double checked to make sure he was dressed, and walked out of his room. Nothing seemed changed in the house. Everything seemed normal, even in Lily's room as he passed by. Bemused, he walked downstairs and to the table, where his mom, dad, and sister already sat. He sat in silence, eating without actually tasting anything, across from his sister who, for all he knew, sat at the family table with her pussy still full of her own dad's cum, but for all he could tell, there was nothing different between any of the three that sat with him.

Matt smiled at the thought of what else he might discover.