Almost there slut. Give me 30 more strokes. Same routine, DO NOT come anywhere near an edge. Take it as slowly as your can. Here, I'll make it a little easier for you to stay away from that edge. Every 10 strokes, snap the head of your cock with a band, right on the tender underside.
This should have you dreading each stroke as it ticks closer and closer to an agonizing burst of pain.