Keep standing and rest the weight on a table or chair. I hope you can feel the cold burn of the ice inside you, but it's no worse than women have to endure every day in the Empire.
Start stroking, slave. Jerk that pathetic cock. Edge for me, and hold it.
While holding the edge, walk away from the table or chair and let the weight fall to the end of its tether. Only after the rope is taut may you release yourself from the edge and take your hands off your cock.