I know that slave has been masturbating up a storm lately, and his cock and balls are desensitized from watching porn for hours. I decide to do him a favor and beat them back into shape so he can feel again. He has a bungee cord tied to his cock and balls and I start by leashing him around, pulling on them and even using the cord as a workout cable. I start by ball slapping, squeezing, kicking, & kneeing him in heels, then switch to harder kicks barefoot because I really want to hear and feel the impact against my feet. I make slave worship my feet and then decide to turn it up a notch and kick, knee and squeez him even harder. His wailing turns me on and I feel little pity. After all, his cock belongs to me and it amuses me to see it get hard during all this abuse. When he drops to the ground, I continue to kick him. I even trample him barefoot on the balls, putting my entire body weight where it hurts the most. I end by dropping him (again) to the ground with a solid kick and inform him that the bungee cord is going back on. I think he's finally got his feeling back...