'Good,' she cried, thrusting her frothy little pussy up to receive every plunge of his cock. 'Are you gonna give me a nice cuntful of jizz?'
'You're not just shittin',' he panted. 'And soon.'
'That's what I want, honey,' she whimpered with joy. 'I want you to fill me up with it.'
Mewling with pleasure, the horny youngster was frantically writhing her ass down into the mattress as each of her brother's lusty strokes drove deeper and harder into her little belly. God, how Robin wished she and her brother could live together forever. She loved him with a passion she'd never felt for anyone else, and the thought of him leaving her someday was absolutely terrifying. God, how she'd miss this beautiful big prick of his if he ever went away.
'Christ, Sis!' he panted, pounding deeper and deeper into her little fifteen year-old pussy. 'You're sure a hot little fucker!'
'I know!' she squealed. 'And I hope you won't forget it!'
Her excited squeals seemed to spur him on and he began violently increasing the wild tempo of his frantic screwing. Pumping into his little sister, he was vividly aware of the intense pleasure she was giving. Brent had fucked two or three of the girls back home, but had never found a cunt that sucked and squeezed and clung to his cock like this one. He also knew that every time he fucked his sister, it was better than the last as their techniques improved.
'Fuck, honey, fuck!' she began screaming hysterically as the boy poured it to her at an even faster tempo, literally lifting her hot little ass off the bed with every thrust.
Robin's battered little twat had never taken such a beating in her life, and she was thoroughly enjoying every second of it. The delicious friction of her brother's thick dick sawing in and out of her slit was lifting her to new heights of ecstasy. Each hard plunge felt better than the last as the intense joy mounted in her loins.
'Fuck, baby, fuck!' she began screaming. 'I'm almost there, honey… almost there!'
Robin's body was filled with such intense heat that she thought she'd explode. She and her lurching brother were locked lewdly together by the massive cock that her clinging cunt was squeezing and massaging. Her little pussy was frantically milking on his prick with a wild frenzy.
Brent's tingling dick was aflame with fires that were reaching every nerve in his body. He couldn't believe that any snatch could be as tight and hot as his young sisters' ravenous pussy. Feeling an explosive climax building up in his sperm-swollen balls, he hoped he could hold back until Robin could reach her own orgasm.
'Oh, honey!' she suddenly screamed, locking her arms and legs around his lurching body. 'I'm coming! I'm coming! Commmmuinnnggg!'
As her thunderous orgasm streaked through every nerve and muscle of her body, Brent fucked harder and deeper into her cunt, wanting to prolong her climax, making it the most intense she'd ever had.
'Oh, God!' she shrieked, feeling his thick hot cum gushing into her twat. 'That's it, darling! Squirt me good, you sweet fucker!'
Writhing her cunt up tightly around the base of his spewing cock, she clung desperately to him as he rapidly filled her hot little hole with his thick, slippery jizz.
'Oh, Brent darling,' she whispered when her brother finally pulled his spent prick out of her sopping cunt. 'That's the best fuck you've ever given me.'
'God, honey,' he panted. 'You're the sweetest, hottest little girl in the whole fuckin' world.'
'I'm glad you think so,' she whispered puffing his mouth down against her soft parted lips. 'Are you going to fuck me again tonight?'
'You know damn well I am,' he whispered, running the tip of his finger up and down the slippery wetness of her little sperm-soaked slit. 'We'll fuck as long as I can keep getting a hard-on.'
CHAPTER FOUR
Two days later when they were only a few miles from Reno, the engine in Brent's old pickup began clattering loudly. He carefully nursed it along to a garage where the mechanic said he'd burnt put a main bearing. Having very little money left, and not nearly enough to pay for the expensive repair costs, Brent sold the truck to the mechanic for a hundred and fifty dollars, took two suitcases out of the pick up and walked across the road, hoping to catch a ride. Brent was wearing jeans and a shirt, and his pretty sister was a lovely sight in a blouse and short cut-offs that deliciously exposed her shapely, tanned legs.
They'd only been standing there a few minutes when a man and woman stopped in a big Continental.
'Where are you kids going?' the man asked when they got in.
'Just to Reno,' smiled Robin.
'Visiting friends there?' asked the woman.
'No,' explained Brent. 'Our truck broke down and we want to catch a bus to Frisco.'
Watching the couple in the front seat, Robin couldn't get over how nice looking they were. He was in his mid-thirties with a thick head of dark well-groomed hair. His features were extremely handsome and there was a soft gentleness in his deep brown eyes. His wife was one of the most beautiful women Robin had ever seen. The creamy skin of her flawless complexion was further enhanced by her long red hair. The woman was in her late twenties with full lips and amber eyes that sparkled when she smiled.
'I'm Brenda Lasser,' said the woman. 'And this is my husband, Phil.'
'Hi,' grinned Robin, thinking how much more refined these people were, compared to the assholes back home. 'I'm Robin Caldwell and this is my brother, Brent.'
'Oh, honey,' giggled Brenda, a naughty twinkle in her eyes. 'You don't have to give me that brother and sister crap. I know how you kids live these days.'
'But we are,' said Brent.
'How old are you, Brent?' asked Brenda, ignoring his denial.
'Sixteen.'
'How old is your girlfriend?'
'She's my sister,' he argued.
'How old are you, honey?' asked Brenda, turning to Robin.
'Fifteen,' she answered. 'And he is my brother.'
'Okay,' laughed Brenda. 'Have it your own way, but if I were fifteen, I wouldn't mind traveling with a handsome stud like him.'
'Where do you come from?' asked Phil, deciding to change the subject.
'Nebraska,' answered Brent.
'Gee,' sighed Brenda, smiling at Robin. 'You kids sure have it made these days.'
'Why?'
'It's the so-called sexual revolution,' smiled the beautiful redhead. 'When I was your age, we sure couldn't roam around the country balling each other.'
Watching through the mirror, Phil couldn't keep his eyes away from Robin. It was very obvious that the two kids were fucking around together, and the sight of the little blonde's shapely bare legs and her firm tits pressing out against her tight blouse was giving him a horrendous hard-on. Phil and Brenda were real swingers, and the thought of screwing this little blonde who was undoubtedly pretty free with her body really turned him on.
Watching her husband's expression, Brenda knew what was on his mind, and the big bulge in the front of Brent's tight jeans hadn't gone unnoticed by the woman. The thought of the four of them balling together seemed like a great idea to Brenda.
'When do you have to be in San Francisco?' asked the woman.
'No special time,' Brent answered. 'Why?'
'Well,' continued Brenda. 'My husband and I are heading for our summer home at Lake Tahoe, and I was wondering if you'd like to spend a few days with us?'
'Do you mean it?' gasped Robin.
The girl had heard about and seen pictures of Lake Tahoe since she was a little child, but had never teamed she'd ever actually go there.
