A/N: Sex between brothers. Don't like? Don't read. You have been warned.

"I've figured it out!" Bobby yelled through the house.

Dean looked down the stairs, "What?" she asked. It was almost night time, they were getting ready for the twins' birthday party. They would be a year old in a couple of minutes. She was dressing them up in their party clothes.

Bobby glared at her, "The spell. It will end after the affected has a child, and the child turns one year old. That's all I've got. I haven't finished reading the text yet. It's in ancient greek. I'll get there, but I'd suggest that you change into your male clothes before the time of their birth." he said.

Dean winced, and ran up the stairs, stripping as she went. She was in her room and only in her lace panties when she became a man again. "Sonufabitch!" he shouted. He wrestled with the panties, trying to get them off. Finally he just ripped them, "Damnit. Those were my favorite pair." he whined, then stopped. It didn't sound quite right with his awsome male voice. He quickly got dressed, and went down to see the birthday party.

He got down to the party and his two beautiful girls smiled at him. Saskia lifted her little hands to be picked up, "Mommy!" she said looking straight at Dean.

Dean blinked, and grinned, "Hi baby girl. Happy birthday Saskia, Cahira." he said. Saskia giggled and gave him a big kiss on the cheek. Cahira lifted her arms up too. She still didn't talk. The doctor said that she would talk when she was ready. Dean wasn't worried, she was a smart girl. He could see it in her eyes. He was so proud of his and Sammy's little girls. He picked her up to, and held them both in his arms. "Mommy loves you both." he said.

Sammy came up behind him, and wrapped his arms around all of them. "It's good to see you back to your old self Dean. But I will miss you as a woman too." he said, then kissed the top of his brothers head to show he loved him either way. Dean turned and kissed Sammy's lips.

They laughed as their daughters squeeled. John was coughing in the background, "My heart can't take this you two!" he gasped. They looked over and saw Bobby patting him on the back, hiding a smile.

Cahira wiggled so that she would be put down, and tottered over to her grandpa. She climbed up on the couch and patted his back as well. Jodi cooed, she was video taping the party, and that was just the cutest thing she'd ever seen.

Eventually everyone settled down, and the twins got to open their presents. Dean had gotten them each outfits. Sam had gotten them early learning tools. Bobby had gotten them language programs. Jodi had gotten them more clothes, and some toys, and John had gotten them both their first knives. Dean and Sam looked at him with eyebrows raised. He just shrugged, "They gotta learn sometime." he said. Dean just sighed. He knew his dad had a point, but it was their first birthday. He let it go though, because he knew his dad meant well. They finished with the presents and the girls were drooping off to sleep. So Sam and Dean took them up and lay them down in their cribs. Bobby went over to Jodi's to finish translating the scroll. John went to his room, and was asleep instantly, leaving Dean and Sam awake.

Sam sat down on the couch, he pulled Dean down on his lap, and held him close. Dean turned around on Sam's lap so that he was straddling him. He leaned down and pressed his lips to Sam's, and ran his tongue along his brother's lower lip. Sam opened his mouth, allowing Dean's tongue entry. Their mouths slanted together, fitting perfectly as their tongues danced. Dean moaned, and slid his hands under Sam's shirt, and caressed his hard body. Sam's head fell away as Dean shoved his shirt up and threw it across the room. Dean's shirt quickly followed.

Sam's hands roamed Dean's body, mapping it out, and playing with his nipples. Dean ground down on the hardness forming beneath him. Sam whimpered as pleasure coursed through him. Sam's hand's found Dean's hips and lead him in a rhythm. Dean's cock was throbbing. They hadn't had sex since he was three months pregnant. That was a year and a half that Dean had gone without sex. It was a miracle. Sam unzipped Dean's pants, and reached down them to squeeze his cock. Dean let out a strangled whimper, and gave a short thrust into his brother's hand. Suddenly he stood up. "I want to do this right Sammy. I want to do this in our bed. It's like our first time again. Please?" he asked.

Sam noddd mutely, and let his brother drag him up the stairs to their room. Dean grabbed the lotion of the dresser, and pushed Sammy down on the bed. He pulled off his lover's pants and underwear, then removed his own, leaving them naked. Dean let Sammy gaze at him, taking in his male body. He fought the urge to cover himself. He didn't want Sammy to be disgusted.

Sam saw it, and held out his hands, "I love you whether you are male or female. Please Dean, let me love you." he said. Dean nodded, and got on the bed handing the lotion to Sam who poured some on his fingers. He told Dean to lay on the bed, then positioned himself over him. He moved his hand down, and circled Dean's hole with his index finger before slowly thrusting the digit in. "Relax Dean." he murmured when his older brother tensed up on him. Dean forced his muscles to relax, and Sam added a second finger. He twisted and scissored them, slowly stretching Dean to accomodate his girth. Dean whimpered, and a tear escaped his eyes when Sam added a third finger. Sam held his hand still until Dean's whimpers had died down. Sam leaned down and kissed him as he started thrusting his fingers in and out.

Dean whimpered as the digits slid in and out, brushing against his inner walls. It felt weird, but he wanted Sammy. Sam withdrew his fingers, and positioned his penis at Dean's enterance. Sam was motionless for a second before he thrust all the way in. He stopped moving as Dean gave a strangled cry, trying to breath the pain away. Dean felt so full, like he was going to burst. It hurt like a son of a bitch, but the pain was starting to ebb. He gave an expirimental thrust of his hips, and gasped as pleasure coursed through him. He saw stars, "Sammy move." he commanded.

Sam pulled out and thrust back in, angling to hit Dean's prostate. Dean moaned, and started moving in time with his little brother's thrusts. He was pulled into a kiss as a hand reached down to stroke him. His prostate was being hit dead on, and pleasure was coursing through him. He knew he wouldn't last long. His hormones were out of control. He wrapped his legs around Sam's hips, and pulled him harder against himself, making his cock thrust deeper inside of him.

Sam pounded into his brother's tight ass, their lips and teeth clashed, as their tongues battled for dominance, even as Dean's body yielded to Sam's. "Cum with me Dean." Sam begged as he slammed home one last time before coming, his semen coating Dean's insides. Dean came, spraying his cum between their bodies. He contracted around Sam, milking him dry. They collapsed, breathing hard.

Dean kissed Sam, "I love you Sammy." he said. Sam replied that he loved him too, and they fell asleep.

The next morning they woke up to a text on Dean's phone from Bobby, "Finished translating. Warning: May turn back into woman at random times. Be careful ya idjits."

The brothers looked at each other, and Dean summed it up, "Sonufabitch!"