I'm visiting my Sister and her husband for a few days. My sister is out running errands and won't be back til later. Awakening from my nap, i go downstairs to get some water from the fridge. Walking by my brother-in-laws bedroom, i faintly hear something so i peak in through the bedroom door crack. Much to my surprise, i see him jerking off... to a picture of me! I know that i'm hotter and more care-free than she is, and my boobs are ALOT bigger than hers but I had no idea I had THAT kind of effect on him! I peak in a little further to confirm that he is indeed jerking off to me.. and oddly enough I can't stop watching, and i begin to rub myself a bit over my clothes, I'm getting turned on and I'm actually really horny! I wonder what will happen if I go in there.. will he be down for turning his "fantasy" into real life? There's only one way to find out... After teasing him and stripping naked, I bend over exposing my ass and pussy to him. My ass is all up in his face and he just can't stop worshiping it! I begin to finger myself as my pussy gets wetter and wetter. He NEVER gets this kind of action with his own wife. After the tease I slowly back my ass up and stick your meaty rock hard cock inside of me and moan with pleasure as i go up and down. I end with jerking your cock and talking really dirty to you and making direct eye contact, telling you that I'm going to drain your balls and that your secret is safe with me. I jerk him so good until he cums on my face and mouth.