I got myself one of these here cock enlargers, you know, you slip it on over a cock, pump that sucker up, see how purple it goes, then pump it some more until the subject is in excruciating pain.

Yep that's what I did!!!!

Then it was on with my Robojac milking machine. Same principle but it moves up and down all by suction, then the poor slave releases his seed into the end of the device. I say poor because when he does it I keep the machine going which results in the most intense pain you could imagine.