CATHERINE SHOOK HER BROTHER DOWN FOR ALL HIS ALLOWANCE MONEY WHEN SHE WALKED IN ON HIM MASTURBATING. TODAY IT'S TIME FOR PAY BACK....."THE BIG PAYBACK"!!! ANTHONY MAKES HIS SISTER FUCK HIM...OR ELSE HE'LL SHOW MOM HER REPORT CARD!!! <br><br> A little while ago, as you may recall.....18 Year Old Catherine got the shock of her life when she accidentally walked in on her Brother, Anthony masturbating. She decided to take advantage of his vulnerable "position"...and shake him down for his allowance by offering to "finish" the job for him...and ultimately....Fucking him for all of his Allowance!! Well.....Anthony is about to get Payback.....THE BIG PAYBACK!!! Anthony really enjoyed screwing his Sister....because she is VERY Hot...but he didn't enjoy being screwed out of his Allowance. Today is Anthony's lucky day!! Catherine left her backpack in the Living Room...and inside it...Anthony discovers her Report Card....and it is NOT good!! Catherine is horrified to see that Anthony has her Report Card, and begs him not to tell Mom. Anthony agrees not to tell....for a "price". Anthony tells Catherine that he will keep her secret....if she agrees to let him Fuck her again....for free this time! Catherine is disgusted by the offer....but she knows she will be Grounded if Mom sees her Report Card....so she has no choice. Catherine is almost in tears as she peels her clothes off....and as her Brother ravages her....she looks like she's going to be sick. All Catherine can say is "Hurry up and get it over with....Hurry up and finish!!" Catherine lies there as her Brother Pounds away at her until he cums. "What kind of asshole Fucks his Sister???!!!" she screams at Anthony