Sister Helps with Morning Wood but Ends Up Wanting More Sex

She notices he has morning wood when she wakes him up and tells him to take care of it himself. He admits he needs some help so she agrees to give him a handjob but it doesnt seem to be working fast enough. He begs her to let him fuck her so she can go on her way and after thinking about how they are only stepsiblings she gives in. His huge cock leaves her satisfied and secretly wanting more by the time they finish.