"Okay," he agreed eagerly.
He jammed his lips onto her violently throbbing joy button and started to suck. Terry shrieked with bliss and almost flew off the seat. She deluged his face with a huge flood of sizzling cunt juice. He sucked greedily and loudly, an obscene noise punctuated by his sister's squeals of pleasure.
"Ooooo, shit, yesss," she cried, "suck me, baby, suck me good and hard."
Matt's tireless young cock was stiff as a board again, throbbing between his belly and the car seat. He thought how easy it would be just to throw himself onto his sister and cram his rock-hard cock into her. But he knew better than to try that with Terry. When she was ready to fuck him, she'd say so.
Meanwhile he figured he was on the right track. He was showing her that whatever kind of pleasure she wanted, he could deliver. He went on sucking noisily and hungrily on her clit, and she clawed the seat and gurgled in ecstasy. She stiffened for a second, gasped, and then began to buck beneath him.
"You're doing it to me," she moaned, "I'm coming!"
She bucked so hard, he couldn't keep her clit between his lips. He rose to his knees and watched her come. Once again it would have been so easy to stick his cock into that hot and slippery little cunt of her's, but he wasn't going to take what wasn't offered. He'd learned that little kid.
He remembered once long ago when he'd grabbed for one of Terry's toys, a teddy bear, and she'd bopped him over the head with it. Then later, when they were pals again, she'd given him the bear to play with. That was the way Terry operated. You didn't take thing from her. She gave them willingly or not at all.
So although he ached to lose his virginity, ached to shove his nearly-exploding cock into her steamy little fuck hole, he didn't make a move. Terry finally came down from her body-shaking climax, opened her eyes, and focused hungrily on his stiff drooling cock.
"My turn to suck you off," she leered. "Change positions with me."
Matt obeyed, stretching out on his back, and Terry crouched between his legs, her mouth poised at right over his stiff teenage prick which stood at right angles to his belly. He could feel her steamy breath on the sensitive head of his prick, and he shivered with excitement. Her small tongue shot out, and she began to lick up the thick cream that oozed from the cleft of his cock.
"Ohhhh, yeah, Sis, I really dig that," he moaned.
She didn't rush. She swirled her glistening tongue ever so slowly and deliciously around the swollen purple head of his prick, getting each drop of cream as it bubbled up in his piss hole. She rolled the salty liquid around in her mouth, savoring it, then swallowed it with a greedy gurgling sound. It drove Matt wild to watch her savoring his cream.
"Mmmmmm, I love the taste of your cock, honey," she smiled. "I just can't get enough of it."
"Have all you want," Matt sighed. "Only I'll probably come in your face."
"Oh, no, you won't," she grinned. "I have plans for that."
She didn't tell him what those plans were, however. She just went on swirling her hot juicy tongue around and around the engorged head of his prick, getting him more insanely aroused by the second. Then, just when he was sure he couldn't last another moment, she left the head of his cock and started licking her way down the blue-veined shaft.
It was just enough to keep him from coming. That little change of pace felt good but not quite as exciting as when she tongued the sensitive tip of his meat. He panted with excitement as she lathered his whole shaft with her hot spit. She didn't stop there. She licked her way right on down to his balls.
"Ohhhh, Christ, yesss," he gasped.
His sister's naughty little tongue tickled and massaged his nut sacs, and he clawed the car seat and groaned. Once again he thought he was going to shoot his load, but at the last possible moment Terry shifted gears again. She left his balls and tongued her way back up to the gleaming tip of his cock. There was more hot cream waiting for her there, and she gobbled it noisily.
Then came the most exciting thing of all for the horny teenage boy. He watched his sister open her mouth wide and bring her lips down around the hugely swollen head of his prick. She kept on going, taking more than half his throbbing boner into the juicy hot flesh of her mouth. She caved in her checks and began to suction the hot cream out of his piss hole. Each hungry suck gave him a rush of pleasure.
"Awwww, Jesus, yes," he cried, "suck my cock, Sis."
Terry responded to his hoarse request by sucking harder and faster on his pulsating prick. She had a brief wicked fantasy about her parents happening by and looking in the window. It would just blow them away to find their coed daughter going down on their computer-genius son. Poor Mom and Dad, they'd probably never dreamed of having fun like this.
She couldn't even picture them making love. How could they do anything so "evil" and "dirty"? She'd never seen them hug or kiss or even hold hands. They didn't want to be a bad influence on their kids. Terry felt so damned sorry for them. But maybe it wasn't too late for them to have some fun, if only she could convince them to try.
But right now she had to concentrate on her younger brother. As she gave him his very first blow-job, Matt was bug-eyed with excitement, breathing loudly and harshly. She zipped her moist lips up and down the rigid throbbing shaft of his cock, and he groaned with pleasure. Hot salty cream was pouring steadily from his piss hole, and she gulped it greedily.
"Oh, wow, Sis, I think I'm gonna come pretty quick," he moaned.
Terry nodded her head, letting him know she wanted to take his load in her mouth, then kept right on sucking. Matt almost came right then and there. It was so kinky, his sister wanting to eat his come. His balls throbbed hard, and his cock gave a lusty lurch in her mouth.
"Mmmmm-mmmmmm," Terry moaned approvingly.
She wanted his first blow-job to be an experience he'd never forget. She sucked faster and harder by the minute, and at last Matt couldn't control his horny instincts any longer. He lost control of himself and started fucking her mouth in hard urgent jabs. She had to fist the base of his cock, or he'd have fucked right into her throat.
"Awwwww, Sis, I'm gonna come," he moaned.
She sucked even harder on his violently throbbing boner, letting him know how eager she was to eat his load. Matt fucked harder, pistoning his nearly-exploding prick over her slippery tongue. A few seconds later she felt the first hot sting of jism hitting the back of her throat, and a moment later her checks were bulging with his boiling load of come.
"Awwwww, shit, yeah, awwwww!" Matt yelled.
Terry gurgled with excitement as she gulped load after load of the boy's delicious come-juice. He fucked her mouth till his balls were drained, then flopped back with a happy sigh, his wet prick slipping from her lips. Terry licked her lips to get all of his tasty jism, then grinned at him.
"That was called a blow-job," she said. "How'd you like it?"
"I hated it," Matt laughed. "But seriously, Sis, I hope we can do that again sometime."
"Oh, I'm sure we can," Terry smiled. "I really miss my boyfriend, Matt, and I'll be awful lonesome and horny this summer if you don't help me out."
"Oh, I'll help you out, Sis," Matt cried eagerly, "any way you want, any time you want. You just say the word."
That was music to Terry's ears. She could just imagine waking up some morning horny and knocking on the wall of Matt's bedroom, which was next to hers. The kid would come flying into her bed with a cock as stiff as steel and give her the hard fucking she needed. That was service! Of course that wouldn't be possible with Mom and Dad in the house not unless Terry could somehow change their attitudes about sex. She didn't know how she was going to do that yet, but she was sure going to try. As she thought about it, she fisted Matt's come-soaked cock and started pumping it. It was just automatic for her to play with an available prick.