Relentless

Relentless by Thexxxpenguin

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.