I strapped my sub for milking, but I also decided to run his little penis through my cbt board so I could see how much cum I could soak him with. I strapped my sub's hard little penis with my cock restraints, and wrapped clothespins around the penis. It looks so beautiful. I had intended to make him cumm like this, but I decided to let him pee with my urethral sound so he could get as much cum out as possible.This is the most cum I've ever milked from my sub in any of my clips. It ran down my cbt like a river of cum.