My Homework

"I need help with my homework."

"Sure."

You leave the magazine behind and follow Sarah to her room. She takes a seat at her desk where you can see a couple open textbooks.

"I'm having some trouble with these math problems. Can you help me?"

"Okay, let's have a look."

You stand beside her and look over at the math books. It's been a little while since you learned this material, but you still remember it well enough to help her. Looking at her work, you can see what she's doing wrong and explain it to her. You guide her through a few exercises and after a while she starts to get the hang of it and is able to do a couple problems on her own.

At one point you glance down at your sister's crotch and are taken aback by the tent in her skirt. You know that girls generally have larger dicks that boys, but you're uncomfortable with seeing such an obvious sign of her sexual development. You try to forget about it and focus on helping your sister with her homework, but you find your eyes are continually drawn back to it. You notice that you have even started tenting a little yourself and are shocked and ashamed that your little sister could provoke such a reaction in you.

"Okay, I think I understand it now. Thanks for your help, Doug."

"Um, no problem" you say a little awkwardly, trying to hide your embarrassment.

Just before you leave her room, your sister turns to you and asks you a question.

"Doug, have you seen my latest playgirl magazine?"

"I think you left it in my room."

"Oh, okay. I'll pick it up later."

You pause for a moment, and against your better judgment decide to confront your sister.

"Why is there a picture of my face in your magazine?"

Sarah suddenly freezes in shock. "Oh no, you saw that?" she asks in a panic. Her face is turning quite red now in embarrassment. "It's just that...I'm always so horny...and thinking about you...it feels so good..." she tries to explain haltingly.

"Are you...are you okay with it?" She looks at you imploringly.