I think we have a messed up family. When most parents find out their two sons are fucking they try to stop it right? Then why do our mom and day say we'd only not get in trouble if they couldn't watch?
We went on a family vacation to Hawaii which sounds fun but left us surrounded by people or parents every at second. Eventually me and my twin said fuck it and I pounded his ass right there on the beach outside our hotel.
My sister and I have a mutually beneficial relationship. When our parents are out, I'm allowed to fuck her in the ass, but only if she's allowed to finish on my face. Getting penetrated turns her on so I usually end up with a creamy mouthful of her load.
I was trying to edge him and get him needy, but it just got me super turned on so I just rode him and used his cock to make myself cum a few times. "Parents Home: Try to be Quiet Edge and Fuck" by River Gray (17:19) full video in comments