Your step-sister

Justin smiled wickedly. "Hey, is your sister home?"

"Step-sister," you correct him. "And... ew!"

"Aw, come on!" Justin lies back on your bed. "Gwen is pretty hot."

You cringe, remembering the time Gwen walked in on you while you were masturbating. The fact that you had been fantasizing about her made it even worse. You were both thirteen and her Mom had just married your Dad, so all kinds of evil thoughts were filling your head. It had been so embarrassing, you'd never fantasized about her again. Though her curvy mother had entered your thoughts a few times...

Justin slaps your shoulder, waking you from drifting thoughts of your hot step-mom.

"Come on, dude. You said anyone I wanted. And I've been thinking about your hot sister for a long time!"

"Step-sister. I have to think about this." You stand and head for the door. "I don't even know if she's in right now."

A quick knock on her bedroom door brings rumbling sounds. Gwen opens the door with a polite smile. You look at her in a way you've tried to avoid for the last five years. Justin's right, her long brown hair and angular features are hot. She even has the same gorgeous hazel eyes as her Mom.

"Hey guys," says Gwen. "What's up? Did you rent another movie for tonight? I'll make popcorn if you want some company."

Suddenly you've got a massive boner. Justin's naughty admission put your mind in a bad place.