Our parents got divorced and our father lives alone in a nice house, with pool, gym, sauna and all that stuff. When he's traveling on business he let's my sister and I to be there, as long as we don't take anyone with us, much less having parties. Because we really enjoy being there alone, we do what we promised him, but we also found out another way to have more fun with having other people with us. My sister suggested the idea and I loved it. I simply love to fuck in the ass.