You're going to stroke for one thing today and that is your eventual ruin. The whole point of stroking is to cum, so there is something so devious about stroking yourself with the knowledge that it's all going to culminate into a ruined orgasm. It excites you to think about how I'm going to tease your cock stiff with my gorgeous body while I instruct your jerking! You know that no matter how hard I tease, what I show, how I stretch, bend, or wiggle...the only orgasm you get is a ruined one. Did that just make your dick harder? I bet. Come and stroke to your ruin!