My Sister Sucks by Terry Avalon
Approx. 3,080 words.
Published on February 3, 2012.
A pent-up schoolgirl, fresh off her eighteenth birthday, decides to live out the fantasy she's always dreamed of: seducing her step-brother and making him use her like the naked ladies on his bedroom posters.
WARNING: This story contains masturbation, oral sex, and delicious, steamy consensual intercourse between a girl and her studly step-brother.