Tim had slept under the sheet and had tossed the blankets aside as it was the middle of summer and ghastly hot at nights. He groaned as he rolled over onto his back.

Blackie smiled knowingly at the tent in the sheet where it draped over Tim's bare hip. She knew what that was, oh yes. Tim was perfectly flagrant about it despite her being his little sister because, he said, "you're too young for it to be a problem." Well, just because Tim was all of a whopping thirteen years old did not mean his much younger sister Blackie lacked physical feelings of her own. Maybe her sheets didn't bulge out in the morning like Tim's but the constant churning in her pussy was just as intense as Tim's more visible predicament.

"I see you have your morning bow-ner," she said, drawling out the word mockingly. Tim got hardons quite often nowadays and Blackie helped him with them. Their mom knew the kids fooled around. She didn't care.

"Yeah," Tim yawned, sitting up, flinging the sheet aside and standing up. He always slept nude. His cock was good sized, about seven inches, and stood up practically against his flat belly. He scratched his balls. "So, whaddya going to do with it?" he asked.

"Oh, jerk it I suppose," Blackie said as if she hadn't given it much thought.

"I kind of want a blowjob," Tim suggested.

"Blowjobs cost," Blackie countered.

Tim was horny as hell and stroking his cock. He offered her 25 cents from his allowance, and Blackie held out for a half dollar. Frustrated, Tim gave in, going over to his pants and picking them off the floor to fish out two quarters. Just to show his annoyance with having to pay, he made a big production of bringing his worn jeans up to his nose and sniffing the seat. "This better be good," he snorted, "And you swallow it, okay?"

"Yeah, sure, what do you think I'm going to spit it out?" Blackie retorted. "Now get on the bed and let me suck it."

"Do it this way," Tim suggested, moving her around so her mouth was on his cock and her little butt was up to his face. He lifted up her dress and found she had, as usual, forgotten her panties. Darn, for a girl her age she had a very poor memory about basic things like putting on clothes! He started licking her asscrack and hole. Blackie really liked that. In fact, if she weren't such a little slut, she'd have sucked her brother for nothing, but she liked the idea of getting paid for sex. Their mother worked as a waitress but made most of her money as a whore and Blackie wanted to follow in her mother's footsteps.

Blackie ran her tongue round her brother's cockknob, tickling the tiny ridges, and licked the thin strip of stretched skin connecting the underside of his shaft with the knob. Then she speared his cock halfway into her mouth and swirled her tongue around it while cranking his shaft with her hand in the opposite direction her tongue was going. This technique always drove her brother bugnuts. With her other hand she gently caressed his hot balls, feeling how full they were. She knew she was going to get a bellyful this morning!

Meanwhile, Tim was kissing Blackie's tight little butt, squeezing her cheeks, nibbling on the little roll of fat where her buttocks merged with her thighs. He loved his sister's ass and dreamed of fucking it. So far the two of them had never fucked, just sucked and masturbated each other. Blackie was very aroused and her cunt was slick. Tim put a finger in there and wiggled it around. When they'd first started playing around Tim, not knowing what he was doing, accidentally broke Blackie's cherry with his finger. It didn't hurt her but the small amount of blood scared the shit out of both of them, until their mother explained it to them--nearly falling off her chair laughing about it.

Blackie opened her mouth wider and slid more of his cock in her, pushing her head down until her nose was poking the underside of his balls. Which reminded her, it was time for her brother to get a shave again. Pubic hair in her nose made her sneeze and his hair was especially wiry. He looked better bare anyway, and his cum wasn't as messy and hard to wash off. Blackie had Tim's dickhead in her throat now and was doing what their mother told them was "deep throating". This was a super feeling for Tim, but Blackie knew the trick was to time her head movements so that she had his cock on her tongue when he began to squirt. That way she could taste it rather than just have it shoot down her gullet.

Tim's finger in her cunt and tongue in her butthole was driving the little nymphet crazy, and she quivered when the first orgasm hit. Tim loved to bring his sister off like this, and thought the smell from her cunt was like a flower opening in the sun, the way it just wafted out from her cum, such a delicate smell, and the taste so sweet, so very sweet and fresh....(cont)