Sheer determination

Brandi grabbed the ruler again, and took another measurement. "Damn. You did it. You reached a whole foot! I have never actually seen this before!" The ruler was tossed far away, no longer needed. Sje turned to her naked sister and grabbed her left tit. "Although, we do have that effect on people!" She admitted with smile. "Are you ready, Mandi? Are you sure you can do it?"

Mandi had not taken her eyes off her prize. A little drool was escaping her mouth before she woke from her daydream and caught it. "Oh yeah. It scares me a little, but I want it. It's like the Everest of dicks!" With that, she giggled and crawled onto the bed, bowing before this royal scepter before her. Her small hands tried to wrap around it, but it took two to fully grasp it. "Seriously... just damn. How have you not passed out?" They all laughed at this joke, diffusing some of the tension in the room.

"I never thought about it. I just assumed it was normal. I'm glad you like it!"

"This might scare away most women, but we can handle it! Now let me get to work!" She sat up with confidence, ready to show him pleasure he has never felt before. A little spit was applied to the head of his cock, and her hands began to work it in, lubricating it for her. Once the top shown with her saliva, she took a deep breath and plunged her head down, taking the whole head of his cock, plus about 4 inches, right into her moith.

"Ohhh... fuuuck. That feels amazing!" Isaac moaned in delight. "This is my first blowjob, and it feels so good!"

Brandi watched this scene unfold in earnest, making sure Mandi could take it, and to watch Isaac's reaction. This was exactly what she wanted to see. Her pussy was very wet, nearly dripping onto the bed. She pushed two fingers inside herself, enjoying the show even more.

Mandi began to bob her head up and down, trying to take more of his cock in her mouth, and down her throat. Every time she dipped back down, she took a little more in, and him a little closer to heaven. After a few descents, she had managed a total of eight inches, closing in on nine. Brandi had seen her deepthroat guys with little trouble, so this thing must feel as massive as it looks. Deciding to hell her sister achieve her goal, Brandi moved behind Mandi and suddenly done into her sweet wet honey pot. This made Mandi gasp and moan, lighting a fire under her already burning sexual desire for this mighty rod. The feeling of her twin's tongue expertly dancing inside of her drove her forward, pushing two more inches of man meat down her throat. Coming up for air reminded her of how full her skilled throat felt. She admired her handiwork, with eleven inches of this thing covered in her saliva. Isaac was writhing in pleasure, his precum leaking out steadily. Her tongue lashed forward and scooped the appetizer from the tip of his hard cock, making him shudder in the process. "Mmm... I want more!" She grabbed his cock firmly. "Are you going to cum? You look like you want it!"

"Oh... Mmm..." he moaned aloud, answering her question the best he could with his brain on overload.

"What was that? I didn't hear you!" A sadistic smile spread across her face as she grabbed the head of his coock with one hand, rubbing her thumb just under the head, making small circles on the very sensitive part.

"Oh, yes!" He finally replied with actual words. "I want to cum!"

"I didn't hear you beg for it!" Her thumb rubbed the same place harder, teasing him.

"Please! Please let me cum!" Isaac pleased with her, completely at her mercy.

"Good boy!" This is exactly what she wanted to hear! She plunged his incredible cock back down her throat, bottoming out through sheer momentum. As soon as her mouth touched his pelvis, he bucked his hips and his body shook hard, erupting spurt after spurt of hot cum right down her throat. Mandi swallowed, using the motion of her throat to massage and squeeze his cock. She also cupped his sizable balls, coaxing out as much cum as she could from them. Isaac came and came for what seemed like minutes until finally his body began to relax, breathing heavily from this new session of pleasure he had never felt before. Brandi continued her oral ****, causing Mandi to cum at the same time, shuddering and soaking her sister's face with her love juices.

When she felt his body relax, she lifted lifted herself from him, removing the object impaling her throat. His cock fell out of her mouth with an audible pop, followed by a large gasp of desperately needed air. She collapsed onto her side, not having the strength left to hold herself upright. Brandi pulled herself from her sister's spent pussy, wiping her success from her face with a proud grin. "Holy shit! You actually did it! You tamed the monster! Good job, Mandi!"

Her sister lied there, recovering her breath, giving Brandi a thumbs up. "That was, by far, the most cock I have ever swallowed. Any I think my stomach is full of cum! It felt like I drank a gallon of milk!"

Brandi's smile never faded, only turned from pride to excitement. "How was your first blowjob, Isaac? Everything you ever dreamed?"

Isaac was heavily breathing himself, but managed to speak between breaths. "That was... the most incredible thing... I have ever felt!"

Her smile never faded, but now showed a look of sheer determination. "Now it's my turn! Can you go again?"

"I... I think so, I just... need to catch my breath!" Not wanting this to end just yet, Isaac summoned the willpower to keep his mighty sword from sheathing. Starting at Brandi's naked hot body also helped. She watched as his godly cock barely wilt before standing back at attention. What he lacks in experience, he makes up for in virility!

Brandi stepped forward and straddled his chest, rubbing her wet pussy on him. Her hips rocked back and forth, grinding her clit on his erect nipple. Every time they met, each of their bodies felt an electric shock of pleasure. "Ohh... Mmm..." Brandi moaned, being the only one who hasn't cum yet. Isaac took the initiative, and grabbed her luscious ass with both hands, and pulled her forward. "Oh my!" she exclaimed suddenly. "That is a good boy! Are you going to eat my pussy? Lick my clit until you drink my juices?"

Isaac nodded his head the best he could. "Just tell me what to do! I haven't done this before!"

Brandi chuckled at that. "You have good instincts! You have done well so far! Show me what else you can do!" As she said this, she thrust her pussy onto his face, who eagerly accepted it with his tongue. Without any training to go on, Isaac just licked wildly at the hole that presented itself to him. The erratic movements were oddly effective, causing Brandi to squirm with delight. He noticed that one spot in particular make her quiver and moan so he focused on the little round nub at the top. This was correct, has she cried out, "Yes! Lick my clit! Oh, fuck yeah!" and ground her oussy on his face. Her movements became more rapid, so he licked faster too. This was again correct, eliciting a, "OHHH FUUUCK!!" from her gaping mouth. Brandi's orgasm wracked her body, as she cried out in ecstasy. Isaac's mouth was flooded with her love juices, squirting out as much as he could lap with his tongue. She tastes sweet, with a hint of a particular tang he never tasted before. He liked this a lot, and will definitely do it again!

As her orgasm subsided, she collapsed on top of him, sliding down in the process, so that their heads were together. Mandi crawled her way up to them to find them kissing each other. Isaac felt her approach, and broke his kiss with Brandi to kiss her sister, not wanting her to feel left out. After a moment, Brandi pulled her sister away and the two shared a kiss themselves, using more tongue than expected of twins.

Three naked, sweaty bodies lie tangled on this very comfortable bed, the scent of sex filling the air. Isaac thoroughly enjoyed this moment, not expecting any of this yesterday. If someone told him that he would be pleasuring two smoking hot babes today, he would have laughed at their face. Now he lied between two of the sexiest women he had ever seen, and was having the greatest day of his life.

Pleasant thoughts were interrupted by a hand gasping his still-hard cock.

"Mmm... I think it is my turn with this mammoth now. I want to feel it inside me!" Brandi exclaimed with determination. "Mandi, can you get it ready for me?

Mandi smiled, knowing exactly what she meant.