The worst femdom tortures you can imagine: hitting weak penis with mouse trap and then cutting off balls with castrating device
Goddess comes to the stables where ponyboy is kept: his balls to be tormented with rope bondage and then locked into chastity cage
Clever chastity device is hitting cock with electric discharges while topless girl is sitting on top and using vibrator
Girl is into pain and electricity: finding out how many volts male slave can handle in his wired penis without passing out