Taylor gives Zack a hand

Zack's erect penis compared favorably to the 50th-percentile dildo Heather had found, but his technique left much to be desired. His hand flew back and forth, trying to get himself off as fast as possible. Taylor doubted he was enjoying himself at all.

A wicked thought inspired her.

You're a sex educator, Taylor, she thought as she stepped through the door. Zack's eyes popped from his head. Teach him something.

“Having fun there, Zacky?” Zack had always considered his sister's distinctive low voice the sexual version of nails on a chalkboard. But now, hearing it as she sat her nude, shapely body next to his while he was masturbating to the memory of... well...

He got it now. He'd go the distance to please that voice.

“Taylor, what... what the fuck?” His face burned red, but though he stopped jerking himself, he didn't remove his hand.

“Well, I was passing by, and, you remember I help kids at college with their sex questions?” He nodded. He didn't like to think or hear about it, but she'd told him before. “And I couldn't help but notice. I'm concerned about you.”

“Concerned? About me...?” He turned even redder, making Taylor giggle.

“Come over here. I want to show you something.”

Zack moved to the edge of the bed, right next to Taylor, his pulse racing, his hardness aching.

He cried out when she took him. Her soft palm and fingers didn't stroke so much as they caressed. She spread his semen all over his length, lubing him up with his own fluid.

“You have to go easy on yourself,” she whispered. Her rasping voice in his ear made him thrust in her hand, but she denied him by slackening her grip. “Don't be so eager, you'll limit the sensation when you're with a partner.”

Taylor watched the beautiful expression form on his face as they found his plateau together, where orgasm stayed at an unhurried distance. She twisted her hand around him, just a bit, at the top of each stroke. His chest pounded, sweat rolled down his stomach. “See? You have to know what you like, what gets you off besides overwhelming stimulation.”

Zack tried to laugh, but an involuntary draw of breath made it more of a hiccup.

“And you... you do this a lot for guys at school, do you?”

“Ok, one? Slut shaming's a bad look on you, Zachary, especially towards the girl holding your crown jewels. Watch yourself.”

He whimpered. He still didn't know what was happening. He didn't know what Taylor was into since she went away to college. Apparently the educational thing had broadened her horizons...

“And two, it's not just normal, but necessary for new lovers to communicate their likes and dislikes to each other. You can't do that if you haven't taken the time to understand your body.”

Zack gasped. New... what?!

“And a great way of doing that is, before moving on to intercourse, to demonstrate by masturbating in front of your partner. Or allowing them to masturbate you.”

She planted a quick peck on Zack's lips, and he groaned, hips flexing against his **** need. The next kiss was longer, her tongue brushing over his lips. First the threesome, then the discovery, now this? Fucking Taylor and her “overwhelming stimulation.” Any girl could give a handjob, but what kind of pervert wanted a kiss? He couldn't hold back, and her hand dripped as she pumped him, long ropes of pearly cum painting his chest and stomach. She stroked his hair with her free hand, Zack so spent he couldn't resist as she molded her mouth against his one more time.

“So.” Taylor's thumb rubbed his sticky frenulum, and a new round of aftershocks betrayed how much he enjoyed it. Her thumb and her satisfied whisper. That's all he needed. "Would you like me to tell you what I like, little brother?"