I own the tube, I learned how to do it over a long period of time and its like cocaine for your cock. Once I experienced it, normal sex wasn't the same. A longer cock with a bigger head that stays hard as long as you desire and makes sex possible and more interesting in more positions. I had to bring my wife along. As I said in earlier posts, at first I think she was just put off by it, then slowly she came see and feel it was something way different and now its what she wants. My wife also said her sister has been asking questions and searching the internet for something like it, saying sex has changed for her.