Getting Ball Squeezed

As I told earlier, I had a mistress sort of person in my life who paid me for my strip shows. Her one day incident of accidentally squeezing my balls somehow got a fetish in me. I was afraid to ask her that as it was very painful the first time. As a matter of fact, it was the very first time hurting my balls that badly. But later, I felt an adrenalin. So, I asked her to hurt my balls but tenderly. She laughed but agreed. but to make it more interesting, she tied my hands in the back and to a wall cabinet. I had no where to move. She grabbed my balls and slowly she was squeezing. The squeezing was getting tighter and my adrenalin was rushing as well. I felt like a bad prisoner in her hand. I could not scream but I was letting out a squeak once in a while. She slapped a few times and it was a different feeling. She even kneed me and it was most painful. I let myself loose and she let me go. My payment for that day was more too.