Chapter 6

George Blackburn, Karen's older brother, was the night-time attendant at the local zoo. It was not a demanding job. He had to make the rounds of the various enclosures once in a while to make sure that the animals were not disturbed and to keep the vandals from scaling the fence after hours. The rest of the time he was free to sit in the gatekeeper's shack and pass the time as he chose.

Mostly, George passed the time by jerking off.

And usually, when he was beating his meat, George thought about his sexy sister, Karen. That was a turn-on from the past. One day, when George and Karen were living at home, she had walked in on the lusty lad when he was in the process of pulling his prick. George had been standing in front of the sink, looking at his cock and balls in the mirror as he pumped merrily away. Concentrating on the task at hand, he had not realized that his sister had come into the room. Then she giggled. George had gasped in shock, but his fist, already into the rhythm, had continued to pump up and down for a few more strokes before he was able to halt the natural process.

He whipped his hand away from his cock and turned to scowl at Karen. George was alarmed and ashamed at having her catch him in the private act of self-abuse, and he was also angry at being interrupted at the crucial moment. His big, iron-hard cock, neglected now, continued to throb and ripple.

"Hell--don't you knock?" he blurted out.

She shrugged, perfectly comfortable with the situation. "You should have locked the door," she countered.

That was true, George had to admit. He rushed into the bathroom so eager to empty his balls that he had neglected to draw the bolt. He mumbled something incomprehensible, blushing bright red.

"Don't let me interrupt, George," Karen said. "Go ahead and milk it off." She tilted her head and grinned, staring openly at his aroused cock. He gaped at her, surprised that his kid sister was so precocious--suddenly aware of how nubile the young girl had recently become, with her pert, thrusting tits and her trim little ass. Karen had worn her dark hair short and curly in those days. Grinning at him, she looked like a sexy and mischievous little imp. She was obviously amused at having caught him with his cock in hand, but just as obviously, she was fascinated.

"Gee--it's nice and big," she said.

His prick, as if aware of the compliment, had given a lurch, towering up before his belly. The knob was dark purple and the underside of his stalk was seamed by a thick, pulsating vein, running from his swollen balls up to the flaring slab of his cockhead. As his prick throbbed, Karen's eyes moved with the motion of a cobra mesmerized by a fakir's flute. She stepped closer.

"Want me to do it for you?" she whispered huskily, glancing up at his face and then immediately dropping her eyes back to his prick.

"Oh shit! You--you wanna?" he gasped. George knew it was naughty to let his kid sister frig his prick, but the thought was all the more exciting for that.

"Don't mind," she said.

She moved closer and reached out. George almost fainted when she folded her hand around his cockshaft. She held him for a moment, squeezing gently on his fuckrod, then began to pump him up and down. She knew what she was doing. It was evident that this was not the first time that she had frigged a prick, and that fact added to George's dark desire. He humped in and out, fucking through her moving fist. Both of them gazed into the mirror, watching the reflection of the act.

"Ooooh!" she had squealed, when the tip of his cockhead began to bubble and, "Ahhhhh!" when his jism load came spurting out in a creamy burst. His hot slime had splashed all over her blouse and drenched her hand and forearm, and Karen had pumped happily away until he was drained. Then, without a word, she had lifted her skirt. George, knowing he owed her a come, had finger-fucked her trim little pussy until she creamed. It had been the most exciting thing that had ever happened to George--and it was still the thing that he thought about when he was pumping his prick.

George was in fact pumping his prick at the moment, seated in the swivel chair behind the desk in the gatekeeper's shack, thinking about Karen as his fist flew up and down on his stiff cock with the skill of constant practice.

"Damn," he hissed, when there was a knock on the door. He thought that he would finish the job before he answered, then thought better of it. He never enjoyed a handjob much when he had to rush it. He tucked his hard prick back into his fly, zippered it up with some effort because it was pounding away, trying to escape again, and went to the door.

He was surprised to find his sister standing there, smiling at him. She was wearing a short skirt and a tight-fitting blouse, and looked as impish as always.

"Hi, Sis--I was just thinking about you," George said.

"So I see," she replied, glancing down at the bulge in the front of his pants.

George blushed, but grinned crookedly.

"Er--what brings you here, Karen?" he asked.

"I want to look around the zoo," she said.

"Well, it's closed, now. I guess I could take you with me when I make my rounds." He was surprised. He'd never known that his sister was interested in animals.

"I'd rather go alone," she said.

"Gee--I'm not supposed to let anyone--"

A flicker of annoyance crossed her face, then she smiled brightly again. "Remember that time I jerked you off in the bathroom?" she asked, raising her eyebrows.

"Oh, hell--I sure do!"

"Your prick was so hard and big, George--" Her gaze drifted slowly down to his groin. "Just like it is now, huh? Were you really thinking about me? Nice, naughty thoughts?"

Before he could reply, Karen reached out and placed her open hand on his pounding fucker. "Oooh!" she purred. George's mouth worked, but no words came out. His vocal cords seemed as stiff as his cock.

"Shall I take it out?" she whispered.

George croaked, then nodded, confused by the suddenness of the affair, and dimly aware that his sister must have some ulterior motive, but not giving a damn, as long as she played with his prick.

Karen drew his zipper down slowly, inch by inch. She undid his belt buckle. The front of his pants flapped open wide and his big cock came slamming out. The fat purple knob was smoking hot.

"Gee--I forgot what a lovely cock you have, George," his wanton sister whispered. She cupped his swollen scumbags in her hand, lifting them, weighing them. Her other hand folded around his prickstalk, skimming lightly from head to roots. His fuckrod hammered in her grip. When she squeezed his cock just behind the crown, the bloated slab of dark purple meat flared out. His pisshole began to dribble.

Holding his cock and balls in her hands, Karen slowly knelt down in front of him. Her pretty face, radiant with lust, was level with his crotch. He stared down and saw the tip of her tongue slide across her lower lip.

"Handjobs are for kids," she rasped. She looked up at his contorted face, fluttering her eyebrows over the glowing orbs of her jade-green eyes. "We're adults now, George--want to come in my mouth?"

"Holy shit--yeah!" he gasped.

She leaned closer. Her ebony hair drifted over her shoulders and her warm breath panted over his cock. She made a moist, hungry, whimpering sound, licking her lips. But she still hadn't touched her mouth to his cockhead.

George placed a hand behind her head and tugged, pulling her face into his groin. But she turned away, so that his cockhead brushed her cheek instead of her lips.

"Jesus--suck my cock, Sis!" he groaned.

"Ummmm--I want to. It looks so fucking delicious," she murmured, her lips brushing against his balls as she spoke. Her gaze lifted.

"Can I visit the animals afterwards?" she asked.

George frowned. What the hell did she want to see the animals at night for? But what the hell did he care, as long as he got his smoking prick into that hot, wet mouth! "Yeah, yeah," he gasped. "Anything--just suck it!"

"Promise?" she whispered.

"Yes!" he howled, in torment.

Karen smiled, her parted lips turned up, rubbing against his balls. Her plan had worked perfectly, and the prospect of animal cock thrilled her to the core. In the meantime, she had a lovely hunk of brotherly cock to be sucked, and a load of sibling cum to be swallowed.

It was a wonderful position for a girl like Karen to be in. Although she was eager to get at the animals, she didn't want to rush this blow-job. Sucking a guy off was always more fun when a girl took her time about it, lingering over the details, enjoying the meat course that preceded the creamy dessert. Her lips were already brushing against his balls, and she began the feast right where she was. His prick levered out along her cheek as she began to nibble and lick at his loaded balls. Her nimble tongue swept all over the hairy sacs, slathering them with saliva.

"Jesus!" George groaned, swaying unsteadily, shoving his balls against her lips. She could feel his jism load sliding around inside the bloated bags. The thought of all that delicious fuckjuice made her slobber and whimper. She kissed his balls and sucked them into her lips. Her tongue darted against the musky meat, slurping hungrily. She feasted on his ballmeat for a few minutes, then began to work her way up his prickshaft. She flattened her tongue against the underside of his fuckrod, and very slowly, dragged it up to his knob. George gasped, nearly fainting with the thrill of it.

Karen lapped up his cock again, and fluttered her tongue against the sensitive underside of his cockhead. She licked back down towards his balls, her tongue crisscrossing now, tracing along the visible vein. Her dark head bobbed up and down, her hair falling in a jet curtain over his cock and balls, and brushing his trembling thighs. Her head turned from side to side as she licked his cockshaft from different angles. Then she fitted her parted lips against the underside of his fat stalk and began to slide them up and down, playing his prick as if it were a meaty flute. His cock swelled and rippled in her lips. She drew up to the big wedge of his cockhead and flutter-kissed the underside of the flaring slab.