Raising her hips up off the floor, Lucinda slipped off her sopping shorts and slid them off her legs. Next, the eager young blonde undid her top and flung it free, leaving herself naked on the bathroom floor.
It nearly broke Lucinda's neck – or at least it felt like it might – craning around and down so that, by grabbing her left tit and pointing it upward as far as she could stretch it, Lucinda could just reach the small pink nipple point with her tongue tip. Panting with the effort and the excitement of anticipation, Lucinda coiled out her tongue and brought it down on the tender nubbin of tit-flesh.
"Aaaahhhurrrggghhhh!" Lucinda gasped, then croaked as hot passion flashed through her tiny breasts.
The surprised girl's cunt exploded with sensation and a gush of hot pussy juice splashed out of her cunt-lips and onto her thighs. Lucinda's whole body seemed to burn with a seething, smoldering mass of sexual need. The feeling was so over whelming that Lucinda didn't feel as if she could even move.
But then the desire grew even hotter within the quivering teenager, and she found that she had to move to keep it from driving her absolutely crazy. Her body was moving lewdly, her hips undulating in a strange, somehow frightening rhythm that reminded her of the way Dawn's cunt was surging downward in search of hot cock in the next room. The little girl's tits were jerking and swelling with need and she turned her head quickly from side to side, her tongue extended, to lash them with the hot wetness that seemed to excite them so much.
Oh, oh, dear God, what's happening to meeeee? The youngster wondered. How can I stop the terrible fire in my little cunt?
In desperation, Lucinda stopped licking her titties and looked up, hoping for a solution in the next room. She was in luck.
Dawn was screaming in the bedroom, her beautiful head thrown back toward the ceiling, her pussy drilling itself down onto Steve's dick with total abandon. Lucinda caught her breath as she saw the torrents of clear liquid spilling down out of her big sister's convulsively hunching cunt, its thick coating making Steve's big cock shine like a greased pole.
"Coming!" Dawn was murmuring happily over and over again as she jerked up and down like a puppet on a string. "Coming, coming, coming, commmmming!"
A shock wave of realization reverberated through Lucinda as she watched. That was what she needed, the little girl suddenly understood. She needed to come! She vaguely remembered a few of the senior girls in a bullshit session in the locker room at school, rattling on and on about how neat it was to come. Dawn hadn't understood then, but she sure did now.
The fucking stopped in the other room and Lucinda's heart did, too. What if Dawn got up and went back to her own room right away, right through this very bathroom? There was not a prayer for Lucinda if she did. It would take too long to find her pajamas in the dark and get into them, and she didn't dare turn on the light. Running down the hall in the nude, pajamas under her arm, cunt-juice running down her thighs, was also out of the question. Suppose Papa came up to bed just then?
Lucinda's panic subsided as she looked back into the room and saw Steve urging Dawn up off his still-stiff cock. He put his hands on her firm ass and lifted, his big prick popping free of her wet pussy as she came up.
"Suck me!" he demanded in a low growl. "Lick your own cum right off my dick and let me shoot my wad right down your throat. Hurry up about it, Sis. I gotta came soon. My balls are on fire!"
A look of joy spread over Dawn's pretty face. She nodded her blonde hair teasingly and moved back a little on the bed, so that she was on all fours just above his dripping prick.
"Mmmmmm, Steve, darling, you're so fucking nasty!" Dawn hissed happily. "You really know how to turn a hot cunt like me on and keep her on, you filthy little fucker!"
Lucinda's shocked mind could barely function. She would have sworn that nothing could have gotten to her after seeing what Steve and Dawn had already done tonight, but hearing her big sister talk like that really shocked Lucinda.
And what Steve wanted Dawn to do to him! Lucinda could not believe her ears. No one would be so depraved as to actually do the ugly things that Steve wanted done.
But now Dawn was showing her younger sister otherwise. The luscious eighteen-year-old was cooing over her little brother's glistening cock expectantly. Her hot tongue flicked out, wiping its way around the wet, red tip of Steve's dick.
"Ohhhhh," Lucinda sighed, fearing she was going to be sick to her stomach.
The feeling passed in seconds. The brief threat of nausea was quickly replaced by a feeling Lucinda was growing more and more used to by now – the rush of hot, gripping lust.
Dawn opened her full lips and took Steve's dick head inside her mouth. Lucinda gasped again as she saw Dawn's tongue glide out along the thick staff, lapping and circling downward until the older girl's lips were halfway down the throbbing meat-stick and the tip of her tongue was toying with the base of the big cock.
"Uhhhhh, that's right, baby, lick me clean!" Steve groaned. "Lick every drop of your cum off, then eat my cum. And I'm ready, honey. I'm almost ready to shoot off, right now!"
Lucinda's head was spinning, her youthful body lost in a swirl of uncontrollable lust. She couldn't believe that any nice girl would do what Steve asked. But nice girls were not supposed to do any of the other things she had witnessed tonight, Lucinda reminded herself, and Dawn seemed to delight in doing all of them.
"Ummmm, baby, give me a mouthful," Dawn murmured, letting the boy's cock slip from her sucking lips for just a few moments. "Come on, baby brother, really let me have a tummy full of hot cream."
Steve groaned and twisted beneath his sister on the bed, her lewd urgings clearly heating his hot nuts beyond his control. The young stud moaned and rammed his cock upward, skewering his lover's mouth until his nuts rested against her chin and her lips were pressed tight against his prick's furry base.
"Throat?" Steve choked. "Hum me! Tighten it up and hum me!"
Dawn smiled around the cock that split her lips. She nodded, bobbing the boy's dick up and down in the back of her throat, then began humming a slightly off key tune that vibrated his prick deliciously.
"Agghhhhhhhh!" Steve screamed, the veins in his neck standing out like cords of rope as he arched up off the bed and fucked frantically up into her humming mouth.
"Ullppp," Dawn gulped greedily.
The head of Steve's long cock made a visible lump in Dawn's throat as the muscles began working to swallow his jetting load. Lucinda felt her pussy tighten as she watched her sister work again and again to gulp down the flood of cock-cream that Steve was shooting into her throat.
"Jesus!" Lucinda gasped aloud, overwhelmed at what she was seeing.
Two small pearls of white cream appeared at the corners of Dawn's sucking lips. They grew bigger as the balls in Steve's wrinkled sac jerked in unison, but Dawn just kept on humming and gulping and sucking until Steve reached out and pushed gently against her forehead.
"Enough, you got it all," the boy sighed in a weary, contented voice. "I got no more to give you."
Dawn smiled again and let his prick slip slowly out of her sucking lips. She licked at its now soft head as it fell, and swiped the two puddles of cum out of the corners of her mouth with her hot tongue. The gorgeous eighteen-year-old made a big show of swallowing the last drop of her little brother's spunk, smacking her full lips to show how greatly she had enjoyed it.
Lucinda was shaking with lust as the obscene show her older brother and sister were putting on in the bedroom came to a halt. The nubile teen leaned back and waited for Dawn and Steve to get it on again. Her maturing young body ached for relief – thirsted for more of the pulse-pounding excitement. This kind of sex education was the type Lucinda craved!