"OK!" the girls quickly got up, stripped off their clothes, and returned, horny as hell.
David looked at Emily, then looked closely at Susan as his eyes fell to her breasts and then her stomach, and finally to her blond, beautiful pussy. Susan smiled, not ashamed at all. David looked up and smiled back. "And one other thing. Pay attention, because its important."
They both nodded. "I know this sucks, but I will not be coming during this...exercise." They both moaned a little then agreed. "Hey!" David exclaimed, "I just met you, Emily, and Susan, for Christ's sake, you're my sister! I shouldn't even be doing this!" They again agreed. "It's mostly because I'm fucking drunk, and, well, I never shy away from helping my sister, or her hotty friend." Emily smiled, then leaned in and gave David a smooch on the cheek. "Thanks," Emily breathed. David looked over at Emily, and her smile turned to a lusty grin she leaned in again, finding David's hard cock with her right hand, while giving him a deep, loving kiss. "You won't be disappointed, sweetie." Susan chimed in "Let's get started! I'm first!"
With that, David leaned back against the wall, spread his legs, and gave both girls a little room. Susan moved her face down to David's dick, and stroked it with her left hand. The feeling for David to be touched in this way by his sister was electrifying. Susan looked up at her brother, then licked the head of David's dick, finally closing her eyes and gently sliding it past her lips and into her mouth, moaning with pleasure. David inhaled sharply, then exhaled and said "oh yeah, baby". Half his dick disappeared, then reappeared. Susan fell into a slow rhythm, making slight sucking sounds as she blew her brother at last. She didn't allow his dick to leave her mouth, as she began to pump it again and again, moving a little faster each time. Remembering that this is a quiz, David, through stuttering breaths, said "well Susan, so far so ... oh Jesus...good." He moaned and reached down to brush the hair on his sister's head aside so he could watch his hard dick suction in and out of her mouth. "Oh yeah, that's it, you're doing so good sweetie." Susan stopped for a moment, repositioning herself in between David's legs. "I have to watch you, brother. You're making awesome noises."
She cupped his balls in her left hand and stroked the shaft with her right, as she dove back down on her brother's penis. "Ooooh...nice job, Susan." His torso twitched in a sign of things to come. Emily looked at David's face, then looked at Susan's face as she bobbed up and down, faster and faster.. Both were staring at each other, and for the first time, both looked as though the word "love" was passing through each of their minds right at that moment, as David reached out his hand to gently touch Susan's face. Susan maintained her eye contact, moaning as she started to slobber a bit on her brother's cock. David inhaled sharply, then sighed. Emily smiled. There was absolutely no way that David wasn't going to come.
Susan started to pump David's dick as her mouth sucked up and down. David squirmed a bit and shifted his weight. "Ooo Susan, careful baby..." But Susan was anything but careful, as she moaned lightly, taking his dick out of her mouth, staring at it, whispering "oh yeah...so sweet, baby.." then stuffing it back into her mouth, easing it down her throat. "Oh my God" David whispered "you're fantastic...what was Mike thinking?" Susan looked up while his cock gently fucked her mouth and moaned a smiling moan. Susan kept stroking his dick as her mouth moved around and about his shaft. "You taste so good, baby..." as she again stared at David's pretty penis, and then she paused, closing her eyes, perhaps in a form of prayer, because her next statement was more of a plea than a request. She breathed out, her mouth an inch from David's cock. David felt her breath and quivered.
"Baby," Susan whispered, her eyes still closed, "I'm sorry, but I have to taste your come." With that, Susan looked up at David's ecstasy filled face, then slowly lowered her mouth onto his dick, all the way to the hilt. David quivered, grimaced, then raised himself up as if was trying to escape. "Awwww....yeah, Susan." Then it hit him as to what she had just said. "Wait, wait, wait, baby.." But Susan did not wait, as she released his cock from her throat, then rhythmically bobbed up and down, all the while maintaining eye contact with her helpless brother. Faster and faster Susan went, as she pushed David to the edge. David seemed a bit panicked, but tried to reason with Susan.
"Baby, don't do it...please...I can't come in your mouth. Please Susan...slow down....don't make me come...you promised." David was whispering now, pleading with Susan to stop on her own because he was now powerless to end this. He reached out with both hands and gently held her head so she would keep looking at him. "Susan, please, listen to me..." he was on the verge of tears it seemed, as his voice lost steam. "No, baby, please...oh...oh...no". David's eyes fluttered as he struggled to maintain control, and his body began to lightly convulse as a prelude to orgasm. "Help me, Emily...talk...oh God...to her."
Emily was smiling all the while, and she leaned in to whisper into Susan's ear while both
Susan and Emily each kept looking deeply into David's eyes. "Take him now, Susan. Your brother is ready to come for you, baby." David looked at Emily with a pained look, almost as if he wanted to tell her that what she said was not helping him. David then looked back into his sister's eyes. Her head was moving swiftly now, and her tongue and mouth spun feverishly around the head and shaft of David's dick, all the while keeping her eyes fixed on her brother's. David's body began to shudder, and he instinctively bucked his dick into his sister's mouth. A small spurt of pre-come released, and then it was all over.
Moaning a soft, adorable moan, David one last time uttered the word "no", then "I'm coming, baby, I'm gonna come...". His body trembled lightly, then he released a monster load of come, followed by another, and then another. "Unnnhhh..." is all David could say as Susan kept sucking him off, while eagerly swallowing all her brother had to offer. His body continued to spasm, and come continued to spurt from his cock, as Susan moaned the unmistakable moan of pleasure. David, still holding his sister's head gently in his hands, kept staring into those incredible eyes, as he came and came. His body stopped convulsing with pleasure, and David released Susan's head and fell limp against the wall. Incredibly, David's dick continued to spurt come, and Susan kept sucking him for another 30 seconds.
Finally, Susan released her brother's dick from her mouth, and licked her lips and her fingers. She apologized to Emily for hogging her brother's cock, and then exclaimed to no one in particular "I'm definitely doing that again. David, your fucking come is delicious baby. I'm sleeping with you from now on."
David panted and strained, and finally spoke. "Susan, baby. You know how to suck cock." Susan smiled and said "I know, baby. And I'll blow you every night just to prove it,"