Mistress Sidonia has her slave in a rubber sack with a double layer hood, she can now do as she chooses - first she teases him rubbing herself on his helpless body. Next she moves onto his cock & ball which she attaches to some complicated electrics - to heighten the buzz she uses condoms filled with ice to cover the electrified cock & balls, the water from the melting ice, increasing the conductivity. Finally she gives him an enforced hand-job showing that she controls everything now.