Chapter 7

"You really are a cruel bitch, you know that. Ellen?" Sid told the woman, as he laughed at Ron's discomfort. The teenager swung from the rings, quivering in a mixture of sheer pain and the last traces of his erection. His balls were on fire - and that was slowly fading to a painful ache that filled his entire belly. There was nothing he wanted more in the world than revenge on Sid and Ellen.

Yet...yet, he had to admit the woman gave great head. If she'd only finished the job!

"What do we do next with our two incestuous young captives?" Ellen asked.

"Let's give the kid there a chance to really swing. Her too. Turning to Melinda, he reached out and gently stroked her cheek. "Would you like to help your brother out of his fix?"

She tried to bite his hand but missed. Her teeth clacked together loudly in the stillness of the deserted gym. She had long since given up any hope that they would be discovered. All the kids were up in the cafeteria at the disco dance by now. And even the guard usually patrolling the school seemed to have taken the night off.

She and Ron were alone. They'd have to get out of this on their own - or not at all

"I like her, yes, I do," said Sid. "Tried to bite me! A really feisty blonde bitch

"What did you have in mind for them, Sid?" asked Ellen again. "You seem to come up with the damnedest things. She poked Melinda in the left tit and started the girl swinging slightly.

The woman's fingernail cut into the teenager's boob and started a little trickle of blood. The sharp contrast between the red blood and the snowy white skin seemed to fascinate the woman. She cut another little gouge in Melinda's right tit, enjoying the sight of the girl squirming in pain.

"So responsive. Do you think their nerves are closer to the skin or something, Sid? Look at the way she twitches when I even touch her." Ellen slapped the girl across the face. The loud ringing didn't go away for a few seconds.

Then Melinda heard, "...so we drag out the trampoline and let ëem bounce each other a while. In a sexy way, of course."

"Lets do it."

Melinda watched as the two coaches set up the trampoline. Ellen bounced a couple times on it, testing. She called out to Sid, "Hey, I think I like this. To hell with them. Let's you and me fuck! This is really kinky!"

"First things first. We want to teach them a little lesson. I'd say the lesson isn't anywhere near finished until they've actually gotten it on ñ right - with each other."

"You're sick, Sid. I think that's why I like you so much Help me with the girl. I can handle Old Blue Balls over there." she laughed.

"Sure he won't cum in your face?"

"Shut up and get Goldilocks up on the trampoline."

Melinda watched, helpless, as they cut the strands of adhesive tape that had imprisoned her on the wooden bar. Her hands were still tightly bound behind her back. She found her legs wouldn't support her, either. The two dumped her on the bouncy surface.

Trying to stand up on the trampoline was impossible. She needed her hands for balance - and they were tied behind her.

She simply sat down and waited. The teenager watched as they cut her brother down from the rings and refastened the tape on his hands. The bound youth was tossed onto the trampoline.

Melinda and Ron bounced up and down a few times before the thick nylon fabric ceased its up-and-down motion.

She thought she was going to get seasick.

"Go to it," Sid urged. "Fuck away. Blue Balls needs it. Goldilocks. Besides, you can't refuse your brother. Not after he's already popped your cherry for you."".

"Go to hell!" snapped Ron.

"We can fix you good, kid. Watch it. And get to fucking,"

"No!"

"Ron, maybe we should..." Melinda began. Then she was tossed up into the air as Sid's heavy weight came onto the trampoline. Helplessly, she watched him roll across the surface to Ron, grab him firmly under the arms and lift him up off the trampoline.

Her brother's weight crushed her as Sid threw Ron on top of her. Instinctively, she opened her legs as Ron came flying through the air. The position they ended up in was anything but brotherly-sisterly.

"See, they got the idea, Sid," chortled Ellen. She began bouncing the trampoline and watching the mock-humping action.

"No good. I want them to really fuck each other." Sid rolled across and looped a strand of the sticky adhesive tape around both their wrists. Ron was firmly fastened, face to face, crotch grinding to crotch, with his sister.

Melinda groaned a little as she felt the tape touch her skin. She remembered what it was like when they ripped it off her before. This was going to be worse. She knew that their motion on the trampoline would slowly pull on the tape. Her skin would be yanked off in huge hunks.

"Now they're in the right position to fuck each other. Go to it, Blue Balls. Give us a good show!"

"You slimy bastard. You...gulp!" Ron couldn't finish his sentence. Sid had jumped off the trampoline, sending brother and sister flying into the air. As they bounced up and down Ron became acutely aware of how well the coaches' plan was working.

He was getting an erection. Being so close to a seductive young girl - to hell with the fact that it was his sister - was starting his hormones racing. His breath was coming faster just from her nearness.

"Sis. I'm sorry! I can't help myself!"

"That's okay. Ron. Just...just do it good! Show that we're better than they are!"

"You really want me to?"

"Yes! Yes!"

And she did.

Her brother's closeness was starting her cunt to flowing. The love juices were beginning to leak out from between her pussy lips. And the band of adhesive tape holding them together insured that his cock would press into her cunt.

She sighed as she felt his prick hardening into a long, fucking tool. He had been about half-erect when the coach had tied them together. She enjoyed the sensations rippling through her body as his cock began stimulating her sex lips.

As he got a raging hard-on, he was poking the knobby tip of his cock into her cunt. The feelings swelling inside her were wonderful. It was so much nicer having him fuck her than either of the coaches. It gave the young girl a sense of contentment.

Her brother would treat her right. They wouldn't have done this, otherwise. She was still scared of what else the two sadistic people watching them might do but as long as her brother was close - very close - it couldn't be too bad.

She hoped.

The motion of the trampoline started them rocking. She took the pressure of both their weights on her aching shoulders. Somehow, the motion eased her agony. It was almost nice. Then she realized the reason for thinking that.

This was the same rocking motion two people fucking used. It was an age-old rhythm. No wonder it was relaxing and exciting at the same time!

"Go on, Ron. Do it to me!"

"Yeah, Ron, do it to her. Let us see you fuck your own sister!"

"Don't pay attention to them. Just fuck me!"

His hips spasmodically jerked forward. The blonde girl had to gasp. Her brother's cock had been just inside her cunt lips. With that movement he thrust his cock all the way up her twat. She was in possession of his entire prick.

It felt like heaven after the things that had been done to her. She loved it, wanted more.

He seemed to read her mind. With a slow move, he started pulling out of her. She squeezed down with her cunt muscles to hold him inside. He groaned but continued. It felt like a giant fist squeezing him flat. Her young muscles were strong, pliable. The way his sister's pussy wrapped around his prick reminded him of fucking into a surgeon's glove.

The fit was perfect. He shoved hard back into her. The lewd fucking noise only spurred him to fuck her faster.

He used short strokes to build up the friction in her twat. His cock was already at the point of bursting at the seams. The blowjob he'd almost gotten had primed his pump. He was ready to fuck. That it was his sister's cunt was only a minor thing to his dazed mind now. All he really knew was that he'd found a tight, hot pussy willing to take his cock full length. He fucked harder, deeper.

Their crotches ground together. They moved together for a few seconds then began rotating their hips in different directions.

He thought he'd lose his mind. It was as if his sister was intent on ripping his cock out by the roots. Her twat gripped fiercely at him. With the added movement he knew he was going to lose control entirely at any instant.

"Hurry, hurry!" he whispered hotly into her ear. "I can't stand it much longer!"

The words were like a hot wind in the girl's ear. She was already at the breaking point. She was so aroused by her brother's fucking, the way he fucked his prick in and out of her clinging quim, that she didn't need much encouragement to cum.

As he really started humping her their bodies began rocking heavily on the trampoline.

This added a brand-new dimension to their fucking. She tossed her legs high in the air every time they soared into the air. She felt his cock drive just a little deeper into her wanton cunt each time she did this. With the motion already in her twat, she was doomed by her sex.

She came.

As she thrashed about, this caused them to roil over and over on the trampoline. For a brief moment she was on top and he was fucking up into her twat. Then they were back in the original position, her brother weighing her down.

It didn't matter. As long as she had that hard, huge cock inside her guts, it didn't matter who was on top.

"Sis, your cunt felt like a vise when you came. It crushed down on me from tip to balls!"

"It-it's okay, Ron. Really, darling, its all right. J-Just keep fucking me! I need you so desperately!"

And she did. He was her entire world. Him and his cock. She felt that fleshy cylinder of prick shooting like a rocket up her cunt. The oils lubricating her pussy were burned away by the friction. The warmth slowly worked its way into her belly. It puddled there like liquid fire. Then it surged throughout her young body again.

She couldn't hold back this cum. It seized her in an ice-and-iron grip and shook her.

Blonde hair flying wildly, she tossed her head from side to side. She wished she could have gripped her brother's shoulders. It wasn't possible. Her hands were pinned under her, tied. Locking her slender legs around his waist helped a little.

She knew he wasn't going to get away. Not with that strip of adhesive tape binding them together. Yet, she wanted to make certain. The girl couldn't bear the thought of him leaving her. Leaving her with an empty twat. That would drive her insane with unfulfilled lust.

"Fuck me harder! I love you so!" she gasped.

"Hear that? They love each other. Let's give ëem a real thrill."

The trampoline began bouncing faster and faster. It wasn't only their screwing that gave the motion to their bodies. The fabric was being hit by the two coaches to send them soaring into the air.

The girl no longer cared about anything. She had her brother close to her - as close as a man can be to a woman. He was digging into her guts with his cock. That counted. That was important.

The wild flying into the air seemed to add to their arousal. He managed to get in two or three strokes every time they were airborne. And she gripped even harder on his cock. She was almost constantly racked with the sweet torture of orgasm.

As they hit the rough fabric of the trampoline, she rocked back on her shoulders. This pulled her brother into her pussy as a slightly different angle. She could feel her pussy walls stroking his cock all along the underside. His plum-tipped prick grew larger in her. It throbbed with a new urgency.

Then he came.

She climaxed again when she felt his lava-hot cum burning all the way up into her belly. She knew her cunt walls were convulsing, squeezing down powerfully on his entire buried length.

They flew into the air. The freedom that flight gave them added to the intensity of their mutual climax. When they smashed into the trampoline again, she came a final time.

Her entire body was racked with emotion. She was gasping for air. Her tits were throbbing with every hurried heartbeat. Most of all, the nearness of her brother taped to her with adhesive tape, was the big turn-on. She had discovered how much she had wanted him sexually.

Melinda had a hard time admitting it to herself, but she found her brother incredibly sexy. She had lusted after him for quite a few of her fifteen years but had never admitted it to herself or anyone else before. She had to tell him.

"Ron, Ron darling, I love you. I love you with all my heart and soul!"

She thrilled when he whispered back! "And I love you. It's hell that it took this to let us find out. But after this..."

"Yeah, what'll we do after this. The two of them have had their kicks. What about us, Sid?"

The woman's voice brought the two incestuous lovers back to the reality of their predicament. They were still securely tied up and at the mercy of the two PE coaches.

"I don't know, Ellen. But seeing them bouncing around makes me think that might be a real fun thing to do. Are you game?"

He didn't have to ask twice.

Both of the coaches piled onto the trampoline, jostling each other and causing Ron and Melinda to worry about what new torture was in store for them. They doubted it would be as pleasant as the last few minutes had been.