In the small print our wedding vows, my father-in-law had it written in that he would have access to my ass whenever my wife gave him permission. When we took our vows, the people couldn’t hear when the preacher a friend of my wife’s dad’s ask both of us to allow the permission of her dad to fuck my ass, and we both said, I do. On our wedding night my wife and I consummated our marriage with vaginal intercourse and there was a knock on the door and my father-in-law showed up and right in front of my wife fuck my ass, consummating our own agreement. My wife and her dad were very close and she actually enjoyed watching me take his big dick up my ass.