Susie continued to lap hungrily as his ass, cleaning it with her tongue. She could barely taste his funk now, unless she plunged her tongue deeply into him. Knowing he liked it so much, she plunged her tongue as far as she could yet again and wiggled from side to side and then up and down and around and around.
"Ahhhh, fuck that feels good," Billy said. "You can eat my ass all day long…" Billy lay still, his ass in the air, enjoying Susie's dedication. He let her eat him for a full ten minutes, until his back began to ache.
"Enough, slut!" Billy said. Susie pulled back, allowing Billy to sit up. Billy was feeling a horny again, but decided to wait a while. They had all day.
"I'm going to play my video games for a while. You can watch some porn, if you want. Just click the play-all button."
Susie watched Billy get up, knowing that she had made his cock almost hard again. She wanted to play with it some more, but obediently sat down in front of the computer to watch porn. She settled in and pressed the play button. On the screen, she watched a hot chick pulling a cock out of a man's pants and then began to suck him off. The girl then reached into her panties and played with herself for a while, and then she pulled out her cock and started stroking it!
"Holy shit, she had a cock, like me!" Susie exclaimed.
"Chicks-with-Dicks," Billy simply stated, still playing his video game. "They are called 'shemales' or 'trannys.' I thought you would get a kick out of it." He added under his breath, just loud enough for Susie to hear, "Faggot…"
"Thanks, Billy!" Susie said. She watched the video's in awe, rubbing her dick subconsciously. She watched one female clip after another. 'Chicks-with-dicks' sucking cocks, getting fucked and even getting sucked and fucking other men in the ass. She wondered if Billy had watched them too. 'Probably not', she decided. After the movie clips finished, she turned to Billy. "What do you want to do next, Billy? Can I play your video games for a while?"
Billy spread his legs, showing off his limp cock. "Why don't you get down here and play with this instead? I want to finish my game."
"Sure, OK." Susie said obediently, falling to her knees once again to worship Billy's cock. Since they had both orgasmed recently, Susie took her time, just enjoying Billy's dick and getting to know it better. She fondled it lovingly, inspected his balls and licked them gently. She gently sucked his glans and tickled his frenulum with her tongue. She scratched her fingernails on his ball sack and sucked him deep. Billy's cock couldn't ignore her manipulations and he stiffened in her skillful hands and hot mouth.
After a while, with Susie continuing her loving manipulations on his cock, Billy simply stated, "I want to fuck you again, Susie."
"Oh, no…, "She groaned."Please, Billy…, I'm too sore down there," she whined. "… I think you ripped my asshole yesterday. When I wiped off your cum, I had some blood on the toilet paper…" She looked at him, pleading with her eyes.
"Aww, you'll be fine Susie," Billy said. "I'll be gentle this time." He grinned evilly, unable to hide his intentions.
"I don't know, Billy," she said. "Let me blow you instead." Susie began to suck in earnest, trying to dissuade Billy from fucking her tender asshole. She sucked him deep, feeling him come to full hardness in her throat. She put her head all the way down to his balls, letting his thick, long cock impale her throat. Billy put his hands on her head and then held her there, knowing she couldn't breathe.
"Let me fuck your ass-hole again, or I won't let you up…" he teased. She began to struggle.
"Mmmph!" was all Susie could say. She knew that if she bit Billy's cock, he would hurt her badly. She decided to hold her breath until just before she passed out, to see if he would give up. She tried to relax.
"Well, slut?" Billy waited.
Just then, they heard heels clicking in the hallway and the door swung opened. "Billy! Did you take my lube….?" Billy's sister Becky stopped and stared at the sight before her. At first, she thought Billy had a girlfriend and caught him getting a blow job. Then, she recognized her old red dress; the one she had given to Jeffry yesterday.
Billy stared in shock at his sister. He took his hands from the back of Susie's head. "Oh shit…" he said.
Susie, hearing Becky's voice and Billy's expletive, slowly pulled back from Billy's crotch. Inch after inch of Billy's wet, hard, fat cock slid out of her slutty red lips.
Becky couldn't believe the sight before her; Jeffry deep-throated a long, fat cock (she couldn't even do that!) and then the sheer size of Billy's dick astounded her. 'Holy shit!' she thought, 'Just how big is my brother's cock?'
Susie kept raising her head and more and more of Billy's wet, slick, cock slid slowly from her throat.
'Was it never going to end'? Becky thought.
Finally, the large flared head appeared from Susie's slutty lips. She involuntarily gave a gentle suck to it, making audible 'smack!' as she sucked in air.
"Hole-E-Shit, Billy!" Becky gasped, seeing her brother's cock in all of its glory for the first time since they were little. His cock was huge!
She looked at Jeffry/Susie, not believing her eyes, "Fuck-N-A! Susie!" Becky added. "You look hot!"
Becky continued her dialog, "Wow, what a couple of sick, cock-sucking perverts you both are!" She walked into Billy's room to get a closer look. "Well, whatever floats your fucking boats, I guess." Becky shook her head, awed by the scene before her. She first looked at Billy, then at Susie, then at Billy's cock - still throbbing and engorged.
Billy was aroused by the taboo aspect of having his sexy sister stare admiringly at his hard, swollen cock. She was, after all, a frequent target of his jack-off sessions. He had spurted his cum on her yearning face many times in his fantasies. Billy pumped his cock, clenching his prostate muscles. His cock throbbed up and down. Becky's eyes got wider. Billy grinned.
Feeling her pussy suddenly dampen, Becky fell to her knees next to Susie. She had to get a closer look.
"Wow, Billy, nice dick!" She reached out her hand and grasped it. "Mind if I help, Susie?" Becky asked.
Billy couldn't believe his good fortune! His cock throbbed. His balls began to swell with fresh sperm, anticipating another orgasm.
Becky looked at Susie. Seeing her shake her head 'No', Becky put both hands on it, getting a feel for its length and thickness. She cupped her brother's heavy balls and then leaned in to lick and then gently sucked her brother's cock-head, opening her mouth wide. Becky enjoyed the feeling of her mouth being filled with his fat knob. She swirled her tongue around his glans for a bit and pulled her lips off and stared wistfully. "Shit, I can't believe there was a cock this big in my own house and I didn't even know it."
She jacked Billy's cock gently, looked at the two young boys and asked, "So, what do you perverts do all day? Suck each other off, or what?"
Billy snorted in derision.
Susie explained, "Billy thinks my cock is gross. That is why I have to dress up like a girl in order to play with him." She reached over and grabbed the base of Billy's cock, feeling a little possessive. "He fucked my ass yesterday," Susie added, proudly.
"You had this monster up your ass?" Becky looked incredulous, estimating its girth. "Shit, it is way thicker than Jason's cock and I won't let him anywhere near my ass-hole, no matter how much he wants to ass-fuck me!" She added, "That explains where my lube went."
Billy grinned, listening to the two sluts discussing his cock. Becky put it back into her mouth. Susie stuck out her tongue and began licking the shaft up and down. Two sets of feminine hands jerked Billy off gently. When Becky would pull her sucking lips off of it, Susie would pop it into her mouth and throat a couple times. Billy was thoroughly enjoying himself.
"Shit, you are good, Susie," said Becky, admiringly. "Can you show me how to do that? I always gag."
"Sure," Susie said, pulling her lips off Billy's cock. Becky took her place. Susie reached down and began to lap at Billy's ball sack. "You just have to take a deep breath and force it past your throat muscles a few times. You will get used to it…" Then she added, proudly, and still feeling possessive, "…Billy fucked my mouth and throat just a little while ago…"