Hi. I'm 55 year old bi man. I have been looking at fisting filmes and would love to have a go. What do i do to get my ass hole nice and big so I can get a hand inside. I love having things put into it but can only get three fingers in. I need more. What is the best whay to do this without a dildo and what is the best lube to use. I married but my wife does not know that I like cock as well. Can any one give me some advice on this.