So, before doffing her robe and getting herself properly dressed, Karyn had some important business to take care of ASAP.
"Have I ever told you you're a big fat meaniehead?" Karyn had her hands on her hips and leaned slightly over where Sean was sitting on the couch, glaring plastic toy daggers into him. Sean had been watching TV, but of course his eyes were glued to her tits now. "Look what you've done to me, man!" She emphasized, gesturing to her bathrobe and still-damp hair.
Sean just shrugged. "Oh golly oh gosh, I made you practice good personal hygiene!" He said to her cleavage. "Whatever could you have needed that for, Stinky?"
"No fair. No fair, I say!" Karyn insisted in faux foot-stamping fury. "I don't see you having to deal with dairy problems like me, do you? You cheated!"
A look of confusion passed over Sean's face for a moment. "I think it's plenty fair," he said with some amount of insufferable older-brother smugness to his tone. "If you get Brain-Blanking Big Boobs you can use on your Big Brother anytime you like, your Big Brother gets to Make your Massive Mommy Mammaries Milk themselves whenever he likes!"
Karyn opened her mouth to make some witty comeback, then closed it after a while. "Use them on him," he says? That's new. "I don't GET to use them on you cause you're never around!" She whined eventually. "You're too busy being a responsible successful adult and stuff. I'm out of practice, I might even have forgotten how to use them!" She said, hoping to coax an explanation out of him.
"Bullshit!" he called to her breasts. "You look like you're about to untie your robe and use them on me right now!"
"Oh, really?" A long, pregnant moment. Curiosity beat anxiety, and turned to resolve in Karyn. "... Suppose I did." Karyn slowly brought her hands to the hasty knot behind her back. Her shoulders rolled back with the motion, thrusting her gorgeous melons even more prominently at him. "What even happens next? I juuuust can't remember, please remind me?"
"Y-you tease me!" Sean appreciating her breasts before, she discovered, was not staring. THIS was staring. "You, uh, you take off the... The uh... the..."
"The Bathrobe?" Karyn gently tugged at the cord around her waist, and the soft, damp fabric around her loosened up. The deep V showing off her magnificent cleavage yawned even wider, and now Sean was treated to the innermost edges of her big red pasties. "Like this?"
"...more..."
The knot was completely undone, and Karyn had to hug the robe to her navel to keep from showing her pussy. Not that it mattered; now the full expanse of her hypnotizing spherical twins were on display, pushed up by her arms folded underneath them and framed by an open robe, and by the expression on his face Sean obviously could think of nothing else but staring at them. "And?" Karyn pressed.
"They sway... they wobble... they jiggle... they're bouncy... they're soft... they're perfect... they're everything... to me..." Poor Sean was starting to trail off and confuse instruction with description.
"And then what happens, Sean?" Karyn directed. She had started to swing them beneath her leaning frame, and was fascinated by Sean's eyes following them unblinking wherever they went.
"Whatever you want..." Sean was drooling now.
Karyn found that unhelpful, and didn't register that he really meant it. "What do they do to you, Sean?"
"They're all I can think about anymore," he confessed. "I can't date anyone, can't watch porn, can't ever jerk off without fantasizing about your boobs and what I wouldn't give to just have my way with them... I worship them, worship you, and when you use them on me I just have to do whatever you say and get myself off later..." he confessed it all so offhandedly it was almost creepy.
Karyn stopped. "Sean," she reminded him, "I'm your sister!"
"Uh huh," Sean just nodded, kept staring, kept drooling at her magnetic tits. Karyn had been fascinated by the increasingly rapt look on his face, and only just now realized that he was also rock hard erect for her.
Karyn was blushing crimson. That was enough, she had had enough. She closed her robe, tied it up tight, and left to go get properly dressed in her room. Sean was left just sitting there entranced, with a big, dopey smile on his unthinking face and a raging hard-on, while Karyn found a pillow to scream in.
Holy fuck holy fuck holy fuck! Sean, her very own blood brother, was apparently having nonstop lewd thoughts about her now, just because of her breasts!? No wonder he reacted as he did when she hugged him! Karyn's boobs really had to be supernatural! They genuinely, honestly, actually hypnotized him the moment Karyn exposed them to him with very little effort on her own part. And HE WAS HER BROTHER! Karyn had a vision of life as Sean knew it, shamefully hiding how incestuous his fantasies had become, furtively jerking off to her whenever he thought he was alone, trying and failing to restrain his thoughts around his sister during otherwise innocent, wholesome family time... had her wish secretly ruined his life somehow? Karyn got a painful knot in her chest thinking about it.
And if HE couldn't control himself around her, who could!?
"...I gotta call Jon!" Karyn said aloud.
