She isn't teasing, and it isn't their first time.

Taylor looked at the bulging front of Zack's shorts as he stood beside her bed. She opened her eyes wide and blinked meaningfully at her brother. "So?"

"So?" Zack said.

"You planning on sticking around or are you gonna take that back to your own bed?" Taylor asked.

Zack blushed. "Um. Oh. Stick around?" he said. "Do you mean?" He looked Taylor in the eye. His heart thumped.

"Yes I mean," she said. "Shorts off. Sit down." She pointed to the foot of her bed. "Shut up. And hang on." Taylor said with a laugh. "Well, you don't have to shut up."

Zack grinned. His sister had a license plate frame with almost that motto. He peeled his shorts down and sat down facing Taylor.

"That's better. Well, look at you all hard, mister!" Taylor said. "You better take care of that." She reached into the shelf at the head of her bed and pulled out a handful of tissues and a squeeze bottle of silicone lube. "Here you go."

"Thanks," Zack said.

Taylor pulled the covers aside and hiked up her nightshirt. Her thick brown pussy hair was trimmed round the edges for a summer swimsuit, but otherwise untouched. She squirted a little lube on her fingertips and started caressing herself.

"Do you really like jacking off in front of your mean old big sister?" Taylor asked.

Zack nodded and whispered, "I do."

Taylor grinned. "Show me."

Zack lubed up his hand and gripped his cock, sliding his hand up and down. Taylor's grin widened. She started playing with her pussy, tugging at the lips. The wet little sounds as she moved her fingers told Zack she was turned on already. Her labia were swollen and ruddy with arousal, and her clit stood out.

"Hey, did you want to hear about my Spring Break?" Taylor said.

Zack smiled. "Sure. You and Hannah have a good time?" he asked.

"Yeah. We picked up a couple of Hannah's old boyfriends and basically partied for a week. Baby here qualified for a mileage upgrade." Taylor patted her pussy and laughed. "Mm-mmm."

"Which guy did you pick?" Zack asked.

Taylor laughed. "You're not thinking Baby got her gold mileage status flying just one airplane." She patted her pussy again, then went back to her finger strokes.

Zack stroked himself, looking at Taylor's pussy, flushed and glistening as she fingered herself. "You go, Tay," he said.

"It was a blast. One guy was crazy good with his mouth. The other guy was pretty game, and just an all-round good fuck."

"Right on," Zack said.

"Yeah, Hannah picks good ones. The only let-down was when they wanted to see me and Hannah play together," Taylor said.

"But I thought you...?" Zack said. "I mean, you showed me those pictures of you and Hannah together." Zack narrowed his eyes, remembering, and stroked himself.

"Ah hah, of COURSE we do," Taylor said. "But we weren't gonna put on a show unless they did something for us. We gave them like three choices, and they didn't bite." Taylor closed her eyes, sighed, and stroked her pussy. "So nice."

"What did you ask them to do for you?" Zack said.

"You're too young to know," Taylor said.

Zack burst out laughing.

"Okay, how about 'A girl's gotta have a few secrets?'" she said.

Zack grinned. "Okay."

"So they got to listen outside the door. Our LOCKED door."

Zack laughed.

"Damn, I better shut up," Taylor said. "I'm distracting you."

"No, that's okay, that's okay!" Zack said. He added another squirt of lube and started stroking himself again in earnest.

Taylor gazed at his cock. "We better make sure you use your powers only for good," she said. "I want to hear the rest of your story tomorrow."

"Yeah," Zack said. "Yeah."

Taylor took her vibrator in hand and snapped it on. A low hum emanated from her personal power tool. "God, I'm so ready," she said. "Mmmmm. You ready?"

"Getting there," Zack said. His hand went up and down faster, squelching at the top and bottom of each stroke. "Getting. There."

"You want to know a secret about Hannah?" she said. She closed her eyes and pressed her lips together, then sighed.

"Yeah," Zack said. His breath was getting unsteady.

"I talked her around. She's no longer a butt virgin. And she came, Hannah came the first time, no hands!" Taylor said. "Lucky b...ahhhhh." She pressed the ball of the vibrator firmly to her pussy. Her breaths came deep and fast.

"Oh wow. Oh wow," Zack said. He watched Taylor's face as she vibed herself, seeing little twitches in mouth, cheeks, and chin.

Taylor opened her eyes to look at Zack. Her face was flushed pink with arousal. She shaped her mouth to smile at him, but her glassy eyes were already halfway gone. In a few seconds her eyes squeezed tight, her face stiffened, and her body lurched with the first pulse of her climax.

Somewhere around Taylor's fourth or fifth orgasmic clench, Zack went up and over. His cock root twitched, his shaft swelled, and he shot a hot load up and through his fist. He grabbed for the wad of tissues, blotting madly to save Taylor's bed.

Zack was leaning back in the corner when he heard the vibrator switch off with a snap. He opened his eyes to see his sister, flushed and sweaty, looking at him.

"Wow," he sighed.

"Yah. Wow," Taylor said. "Bedtime for reals now."

"So, same deal?" Zack said.

"Yah. I ask. You stay or you don't. That's it."

"Okay. Goodnight." Zack slid off the bed and balanced unsteadily on Taylor's rug, still holding a wad of tissues in front of him.

He leaned forward and kissed Taylor's cheek.

She kissed his cheek in return.

"Goodnight," Taylor whispered in his ear.