Devin freaks outs when his master clamps a steel collar around his cock and balls. "Not my balls!" he screams, not knowing what's next. Then the man clips a wire to the collar. Devin is a bit slow, so it doesn't sink in right away that his worst fear is about to come true: His balls will be electrocuted. We keep the voltage lower than we would for a real criminal, even though Devin's screams seem to indicate the opposite.