How to train your sissy.

Angus McCreary didn't hate his cousin Janet. He just thought she had a sadist streak a mile wide and thus didn't enjoy spending time with her as Angus seemed to be her favorite target for teasing and tormenting. It wasn't surprising, then, that he bit back a groaned curse when she sauntered into the kitchen while Angus was eating his cereal, wearing nothing but a tank top and panties. Embarassingly, the sight did... things to Angus's dick.

"Mornin', nerd," Janet said as she rummaged through the cupboards to scrounge up her own breakfast. "You jerk off to my tits again last night?"

Angus groaned and rolled his eyes. Yes, Janet's tits were spectacular, perky melons with fat nipples capping them, and yes, Angus might have stared at them a little too long when his cousin had arrived last month to move in with Angus and his parents after her father had taken on a job in Europe, and couldn't keep himself from sneaking glances now, but did that mean that Janet had to relentlessly tease him about it? Definitely not, if you asked Angus.

"Seriously, you're always so grumpy." Sitting down with a PB&J sandwich across from him, Janet grinned at him, took a bite and continued while chewing: "I'm just teasing you! It's not a dick, don't take it so hard."

"Hardy har har," was all Angus could muster in response. He had never been good at witty banter (or any other kind), and would likely come up with an amazing comeback once he showered tonight, but for now, he'd have to bear Janet's tormenting. At least her low-cut top gave him lots to ogle... No, damnit! Janet was his cousin! Who had definitely caught him staring. Again.

"Alright, I'm going to the beach." Having polished off her sandwich, Janet stood up and began walking out of the kitchen. "You gonna come, or are you going to stay home and study for college, or jack off or something?"

"Uh, study. Be careful, alright?" Angus called out after his cousin. What? Just because he didn't like her very much didn't mean he wanted her to get hurt. "You know they say there's something weird going on in the city."

"Mhm, yeah." Janet turned around halfway, smirking at Angus. "That's so like you, falling for this urban legend bullshit. Can you even call it that if the rumors are only a few days old? Listen, you wuss, there are no cryptids running through the streets at night, and definitely none with F-cup knockers. Still, figures that you'd believe it. Perv."

"But--"

"And even if there were, it's not night, and I'm going to the beach, not some backalley bars." Continuing out of the kitchen, Janet gave her cousin a small wave. "Still, nice to know you care about me. Or is it because you're afraid you won't see my boobs again?"

"I... ugh."

"See ya, Angie!"

Angus really didn't like his cousin's personality.

Just like Janet had predicted, Angus spent the day studying for college, jacking off, and finally marathoning a new show he'd discovered, only taking breaks to go to the bathroom and to get some food. With his parents having taken two weeks off work to visit Janet's father in Europe, at least no one was getting annoyed at him. No, these days, he was the one getting annoyed, particularly at the way Janet came racing into the house towards evening, slammed the front door closed behind her and thundered into the guest room next to his, slamming that door too. Rolling his eyes, Angus tried to decide whether he should check on her. But then she would just tease him again. Angus could practically hear her: 'You just wanted to see my tits, didn't you?' Nah, he'd watch another episode, get some snacks afterwards and then check on her. Maybe. At least that was the plan...

"Mmmyeah!" It was muffled by the wall, but it was unmistakably a lustful, feminine moan. "Ffffuck yes!"

Goddammit! She was always giving him shit for masturbating, and now--

"Oooh FUCK!"

Angus really wished he'd invested in some noise cancelling headphones instead of a soundbar. And he also wished Janed didn't sound so damn sexy!

"Ah! Ah! Ah! Aaaaw YEAH!"

Even with his hands on his ears, the loud, unabashed sounds of pleasure were clearly audible, and Angus found himself inexorably growing hard even though his last load had been blown only an hour ago. And it only got worse when Janet's moans got more... descriptive.

"Holy shit, these things feel GREAT! Anhyes!"

And now, Angus was picturing his cousin mauling her fantastic tits, her hands overflowing with creamy titflesh. It did not help the situation downstairs. And as lust and anger warred within him, Janet's rising moans whittled away at his restraint.

"U-uhnfuuuck~... so gooood. So fucking good!"

Fuck it. Janet's moaning had Angus hard as a rock, and if she didn't have the courtesy to shut the fuck up, he wasn't going to waste this primo wanking material. A zip, a flop, and Angus's throbbing cock was in his hand, quick strokes making his lust build rapidly. Though part of him was ashamed for jerking off to his cousin's moans, he really didn't care right now.

"Fuck, fuck, fuck, FUCK!" Judging by the intensity of Janet's moans, she was getting close - and lucky for him, Angus was too. His hand a blur on his dick, Angus couldn't help but gasp as his nuts churned.

"Oooh yes, oooh yes, oooh YES! Cumming, CUMMING!"

So was Angus. His cousin's orgasmic cries ringing in his ears, he blasted rope into the air and all over his desk, cumming harder than he had in a long time. As Janet's cries fell silent, post-nut clarity hit Angus. He'd just jerked off to his cousin. He'd have put his head in his hands if they hadn't just been on his cock.