Chapter 7

That satisfied Crystal for three whole days. In the meantime, because she had refused to let Mark do anything with her, she relented and gave him a blow job every night. That was fine with Mark. Her mouth felt as good as he thought a pussy would. He loved to hear her swallow his cum.

But as the day her period was supposed to start got closer and closer, and Crystal got hornier and hornier, she finally lost control.

That night, when she went to Mark's room, she stripped and climbed into bed with him.

"Tonight I want you to squirt on my pussy again," she said, breathing deeply.

This time she spread her legs wide and let Mark get between them. He held himself up with one hand while he used the other to hold his stiff cock. He tried to jerk it and rub her at the same time. But she wanted her nipples sucked too, and he had to support himself with both hands to do that.

So, leaving the tip of his prick nosed into her pussy mouth, he leaned down and feasted on her ripe nips. He poked at her with his prick.

"Careful" she gasped.

He didn't answer. His mouth was full of her right nipple.

Crystal felt her orgasm coming. Her hips got unruly and began to wiggle against his rigid pole.

"Careful" she panted, even though he wasn't moving any more.

It was pure accident that he chose to poke at the same time her hips chose to jerk upwards and suddenly, his prick head popped inside her pussy.

"Ohhh owww" she moaned. It hurt. She was stretched so much. But it was somehow the kind of hurt that had a good part too, and she suddenly wanted to keep feeling the good part.

"Mark" she gasped. "I think it's in me a little. Don't go any deeper."

Mark, as we have established already, was a horny teenaged boy.

"OK" he gasped back. The head of his cock was surrounded by fire and it felt BETTER than her mouth, which was merely hot. But he didn't want her to make him stop completely, so he pulled his cock back out.

His brain immediately registered extreme unhappiness, and he promptly pushed the head back in.

"Ooooo ... ummmm" moaned his sister. It still hurt, but that lovely feeling of the top of his bone rubbing her clitty as it moved made her crazy.

Not hearing any further complaint, Mark commenced to fuck his sister's pussy with just the head of his cock, slipping it in and out gently, feeling the sap rising in his balls.

Crystal's orgasm crashed on her like a ton of water.

"Ohhhh ahhhhhhh mmmmmm" she groaned, her hips going out of control.

Mark felt his spunk shooting along the length of his cock and, because that's what boys do, decided that inside her pussy was better than ON her pussy, so he let it go.

Six healthy teenaged ropes of potent sperm flushed into Crystal's pussy, filling it to the brim. Knowing that, if he stayed in her, he was about to shove his cock deep, and knowing that she wouldn't like that, Mark pulled and let his cock head hover over her gaping sperm-filled pussy mouth as the last two squirts splattered her mons. He aided it by stroking his prick to get every drop out.

He collapsed on his sister's warm soft body and sought her lips. He wasn't sure that this was what she'd had in mind, and wanted some sign that she wasn't mad at him. Her hot, passionate kiss convinced him everything was OK.

Crystal had her period two days later and sighed with relief. She hadn't been really worried, but she'd shoved an awful lot of gooey sperm up into her pussy with her fingers since her last period, so it was good to know that wasn't too dangerous.

Had she been a little older she wouldn't have jumped to such a conclusion. Still, she decided to go back to blow jobs and getting her pussy sucked as far as Mark was concerned.

Now, however, it was an every night thing.

Throughout the next week Crystal and her uncle traded looks that melted her heart. Once, while they were in the cooler together, he kissed her long and deep.

"Uncle Bob!" she said, after the kiss, which she hadn't resisted in any way shape or form, and in fact had returned with gusto. "It's not even payday."

"I don't want to wait til payday" he complained in a little boy voice.

Crystal had the urge to suck a load of his cum into her stomach, but resisted. There were other employees around.

"Too bad. But I promise I'll make it worth the wait," she said.

Since they'd done everything except fuck, Bob forced himself to leave her alone and went into his office, where he locked the door and beat off.

Twice.

The next payday came and Crystal acted like it was nothing different at all. She did blow her uncle a kiss when nobody was looking, but that was it.

When closing time came Bob flipped the sign. Only he and Crystal were left in the store.

"I have some bad news," he said.

Crystal turned and crossed her arms under her braless titties. "OH?" she prompted.

"I left your paycheck at home accidentally," he said. "I won't be able to give it to you until Monday I guess. Unless you went to go home with me to get it tonight." he added.

Crystal thought. It had been three days since her period had stopped. She knew how good Mark's dick had felt sliding in and out of the mouth of her pussy, and she'd already decided she wanted to feel her uncle's even bigger cock head doing that. But going home with him would take so long.

"My parents will expect me home on time," she said doubtfully.

"I thought maybe you might cook me dinner," he said. "Your mother brags on you for your cooking ability."

Crystal lit up. The only thing she knew how to cook was spaghetti, but you couldn't mess that up without actually trying. She picked up the phone and called home.

"Mom? Hey, it's me. I think I'm going to go over to Uncle Bob's tonight and make him spaghetti. He's looking a little thin and hungry."

Bob was looking hungry, but not for spaghetti. He wanted to take his time with this delicious teen and leave her weak and helpless. And then he wanted to make her a woman. His caution about her age had eroded over the weeks. In his mind she already was a woman.

"OK, I'll probably just walk home. It's not all that far. If it's too late I'll call and you can come pick me up." said Crystal into the phone.

She hung up and unconsciously pinched her nipples through her uniform shirt. "She said to make you happy. I think I can do that," she said, her voice sultry.

They rode home in Bob's car in virtual silence, listening to the radio, while each thought about what they wanted to happen at Bob's house. Their thoughts were remarkably similar, though in Bob's fantasy his prick went deep inside her, and in hers it just teased her pussy until she came and then squirted just inside her pussy lips. She still thought of herself as a virgin, as silly as that might seem.

When they got there, Bob followed his niece inside, watching the sway of her hips as she walked in front of him, her short skirt swishing. Once inside she turned.

"Let's wait for supper. I want my paycheck now."

Bob led her to his bedroom, taking his shirt off on the way. He kicked his shoes off in the hallway. When they got inside the bedroom Crystal took her clothes off with no shyness at all while Bob watched her naked charms revealed. Then she got to her knees in front of him and attacked his belt. She got his pants loose and they dropped to the floor to reveal his prick straining out from his heavy balls. Crystal sucked his knob happily, licking it and kissing it.

He took her to the bed, kicking off his pants on the way. He was too impatient to take his socks off. Crystal flopped happily on the bed, glad she could be comfortable and spread her legs.

"Lick me." she commanded.

Bob reduced her to a flopping rag doll as he sucked her clitty and bit it, sliding first one and then two fingers deep inside her and tickling her cervix. Crystal flopped her way through an orgasm and then gasped for breath as he crawled up between her legs.

She put a hand on his chest.

"I let a boy put his cock in me ... just a teeny little bit," she said.

Bob felt rage suffuse his face. Some punk had gotten to her first!

"But only just a little bit," she said, seeing his face go tight. "Not all the way. I wanted to see if I could do that with you."

"What boy?" he rasped.

"I can't tell you," she said. "It's a secret."

"Why is it a secret?" he asked, his head dipping to her nipples. He knew she'd be unable to think if he worked on her there. She loved to have her nipples sucked.