You love looking through your step-sister's panty drawer, but tonight she's caught you. She is SO angry to find you snooping through her thongs and threatens to tell your parents. Thankfully for you, you know some bad stuff she's done and she agrees to give you a little show if you promise not to tell on HER. At first she is angry, but then she starts to like it and even teases you a little. She doesn't want you to make a mess by cumming all over her room so she instructs you to cum on her ass.