Your sister's boyfriend is out of town, and she has a proposition for you. She wants to do something special for him while he's away, something sexy, but she needs your help. She was thinking maybe a POV style sex tape would be nice to send him, but obviously she doesn't want to fuck someone else. She's thinking since you are her brother maybe you can help her, and it wouldn't really be a big deal right? It's not like she would be cheating if you guys fuck because you're family and you would just be helping her out. At first you are reluctant, but you really want to help your sister out so you agree. She starts off giving you a nice sexy BJ taking your whole cock down her throat, then it's time to move on to the sex. You thrust your cock deep inside your sister over and over, admittedly it feels really good... after a few minutes your sister tells you to stop, she heard a noise downstairs. Your parents have come home early from their date, but she tells you to keep going so you can finish the video, they probably won't come upstairs anyway its pretty late. You keep going, and to your shock you hear footsteps on the stairs and look over to see your mom standing right there! You can't believe that your mom just caught you fucking your sister of all people! Even worse your sister tells you to keep going, and just starts telling your mom to go away so you guys can finish the video! You are so wildly turned on you don't even care that you have been caught and you keep going and cum right in your sisters tight wet pussy. Your sister reveals the giant load you sprayed her insides with to the camera, and the video is done. Time to deal with mom!