You have decided to treat yourself to an escort for your birthday but your sister turns up at the door! You are both as confused as each other, she can't believe you found out she's an escort, she doesn't know what to do. She realises that you find her attractive, she suggests you go ahead with the booking BUT don't have sex. She strips off for you, gets down on her knees and is so shocked by her brother big cock! She gives you a blow job you'll never forget... now lets go to the family party together bro ;)