Pair of sisters fucks their father to get a permit.

They both knew what they were willing to do and they were not shy at all to do it, they wanted to get that permit but they knew it was something almost impossible, their father would never allow both of them to go out to the city that night and more knowing that they would go to a party. That's why they thought about it so much and found no other solution. They knew that their father could not refuse in exchange for that small favor, they had recently discovered their father's biggest hidden secret, his taste for incest porn and it was the perfect time to use that secret to their advantage. They both agreed and prepared the ambush.