Your big step-sister Jackie's getting ready to go out for the night and confesses that she's on the prowl to get knocked up. You don't seem to happy that your step-sister is going to get pregnant by a stranger so Jackie suggests you do the job! You're reluctant, she IS your step-sister, and you are a virgin. Once your big step-sister puts her huge tits in your face your body betrays you and you go rock hard. Jackie is tired of waiting so she just mounts you and grinds the cum out of your young virgin cock, tweking her ass on your dick until she gets what she wants!