Hannah? Let's do it. (Warning: M/M content)

"...really it's up to you," Gavin said. He stood by the door, waiting for Zack's reply.

Zack gave Gavin a crooked half-smile. "So. Hannah?"

Gavin nodded. "Yeah. Hannah."

"Let's do it before I chicken out," Zack said.

"If you say so," Gavin said.

Zack raised his eyebrows.

"Okay, Hannah. Yeah," Gavin said with a laugh. "Let me set us up for bonus points."

Gavin set up the little robot figure that he'd used as a motion-detecting video sentinel to make sure nobody messed with his stuff and had ended up catching a sex video of Zack and Hannah's intense fuck on top of Gavin's bed. This time he narrowed the angle so it only caught a section looking up between Zack's legs, so it would show Zack's cock and Gavin's hands but nobody's face. He jammed the foam sandal under the door again, not wanting to put a sock up when it was just him and Zack in the room -- Kurt would probably give them a hard time, and who knows what Brandon would do -- and headed back to the bed.

"I guess think of something nice," Gavin said. "Like...Hannah?"

They both laughed.

"Or what you walked in on," Gavin said. "Hannah. And Taylor. Wow."

"Dude, that's my sister," Zack said.

"What? Oh. Sorry, didn't think about it," Gavin said. He frowned and his lip twisted. "But you..." Gavin cut himself off, shaking his head. But you stayed to watch, Zack. "Hannah then."

"Hannah," Zack said.

"All right," Gavin said. "Let me make sure this is rolling and we'll get started." He went to his laptop screen and squinted at the image piped through from the camera eyes of Magnamech, his robot sentinel.

Zack lay back on the bed and closed his eyes, trying to think of Hannah under him, hot and eager as they fucked together, right here where he was lying. There was a click, a squirt, a snap, and a soft thump. Then one hand gripped his cock shaft and another hand gripped his cock root with two fingers and a thumb.

Gavin's question had brought back that scene, the three girls together, and he couldn't dismiss it. Hannah's blonde hair tossing and her tits bouncing with her thrusts. Taylor's feet high in the air, her low, sexy voice moaning loudly as Hannah pounded her with the big black strap-on, Taylor's wet red pussy lips squishing back with Hannah's dildo strokes, Taylor's long toes curling as she cried out her orgasm into Heather's pussy while Heather ground out her own cum on his sister's face.

Zack moaned as the recollection of the sexy, forbidden images he'd seen mingled with the steady stroking of Gavin's lubricated fist on his shaft. Those fingers holding his cock root. Had Gavin learned that somewhere? Did he just like that himself? Zack knew Gavin read lots of sex advice online. The thought faded as Gavin picked up the pace of his strokes. As Gavin started stroking up and down over Zack's cock head, Zack moaned aloud.

Gavin worked away, thinking of Hannah. Of Hannah's choices, how she'd gotten this to happen, this, here, now. Zack's cock was warm and slippery in his hand. He felt it pulse and twitch with both hands, the fingers pinching the root like he'd read about, his fist feeling Zack's shaft swelling in his grasp. Zack had sat there in the girls' bedroom, watching Hannah fuck Taylor. Watching his sister get off. Men are dogs, he'd heard more than one woman say. No, Gavin thought. But we are hungry. We just want to know what to do. He remembered Hannah's command to Zack. Finish him!, she'd ordered.

Now it was Zack's turn. Gavin stroked hard and fast over Zack's cock head like Hannah and Zack had done to him.

"Ahh...AH!" Zack cried out. His body tensed, his hips bucked, and his cum shot out across his belly.

Gavin gave Zack a few more strokes, slowing down, until Zack was shot dry, then let his friend go. He stopped the recording and got a handful of tissues, laying them atop the white laces of cum on Zack's chest and belly before they decided to run down onto the bed.

"I guess that's our ticket," Gavin said.

"Yeah," Zack said, his eyes still closed. "Thanks."

"What do you think she has in mind?" Gavin said.

Zack yawned. He stretched and his back popped. "Dunno. You're closer to a mad scientist than I am. And certainly it seemed like she wanted to run experiments on us."

Gavin laughed. "Like that cartoon with the guy with his mad scientist big sisters."

"Mmm," Zack said. "Yeah, like that. Not."

Gavin laughed louder. "I guess we let her know, huh?"

Zack yawned. "Yeah. Man, I guess I'm gonna want a nap."

"Sure," Gavin said. "I guess I'll go like I said." He looked down at Zack. "But that's your bed now."

"OK," Zack said. "Hey, before you go? Could you take the tissues out and open the window? Air's a little heavy in here."

"Yeah. Sure, okay," Gavin said. He put Magnamech back on the corner shelf, opened the window, took the liner out of the trash can and held it out in front of Zack.

"Oh," Zack said. He wiped himself off with the tissues Gavin had left and dropped them in the trash bag.

Gavin tied off the trash bag and picked up his laptop with the recording. "Seeya later," he said.

"Hannah," Zack said.

"Yeah," Gavin said. "Hannah." He unwedged the foam sandal from under the door, eased outside and closed the door, leaving Zack alone.

Gavin dropped the knotted trash bag in the larger kitchen trash and took his laptop to the corner of the living room. He didn't put in earbuds. Better not zone out yet. Hannah was out there somewhere unless she'd gone back to the bedroom. Taylor was somewhere around. He wasn't sure what he'd say if he saw her. Or if he could meet her eyes with a straight face. Play it cool, he thought. And anyone could come back from the lake. Kurt, Brandon, Victoria, Madison, Heather. Chloe. Or Ashley, wondering where her big sister was. He swallowed. Play it cool. Maybe he should head to the lake and let them know everything was okay. They were napping. Yeah, and Zack too. Gavin shifted uneasily. It might be the better choice.

The bedroom was cooler with the open window, but still warm. Zack pulled a sheet over the top of himself and was soon napping.