Sister catches brother jacking off and is is disgusted. She tells him he should have locked his door and that he should wait till no one is home. She realized he is hard and staring at her tits. She starts to tease him and offer him a blow job. She promises not to tell. He cums all over her and the size of the load made her want to feel him inside her. She gets naked and lets her brother fuck her and cum deep inside her. She loves it so much she never wants him to jack off again she just wants him to keep fucking her. LOTS OF DIRTY TALK.