Collaborative sex stories let us write the plot together

(Her Secret Fantasy, continued by FlurryFlute...)

You pull your step-sister into the girl’s bathroom and into a stall.

“H-Huh?” Amy looks around, confused, before you grab her, bend her over your knee and slap her ass hard.

She lets out a yelp of pain and surprise as she looks at you. You yank her skirt and panties off and slap her harder. You can’t help but remember the day your mother brought her home from the orphanage. How cute she looked back then, and now you’re here acting like her father.

“You’ve been a bad girl!” You smirk as she only nods and you slap her ass again. A few more spanks and she suddenly turns and sits on your lap, pushing her lips against yours. A wave of memories flash back into your mind of when she would cock-tease you when she was sixteen. Of course, the law said you couldn’t do anything but watch, but now that she’s eighteen you can fuck the shit out of her.

You unzip your pants and give her the honor of pulling your dick out. Now it’s the make or break moment.