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I have a masturbation challenge for you, stroke slut! If you succeed, you'll get a reward: a big orgasm. If you fail? You owe me a chastity denial penalty. I'm going to set a timer for five minutes. Once the clock starts ticking, you have to stroke exactly how I tell you to, without stopping or pausing, until time is up. Your challenge is to last to the end without prematurely exploding. It won't be easy. I'm going to tease you mercilessly with every inch of my body, until your cock is twitching and throbbing, and your self-control is wavering, as you desperately try to hold back that uncontrollable eruption of cum from your cock. I want to win this challenge. And I know exactly how to make you lose control completely. Do you have what it takes to resist cumming prematurely for me? If you cum too soon, too bad! You'll have to ruin that orgasm -- and then lock up your dick in chastity. I'll tell you how long you'll have to stay in chastity once you're watching. But if you can hold back until the end, if you win this challenge, I'll let you cum nice and HARD for me. And I'm going to make this orgasm feel so euphorically, blissfully good that those of you who have failed in this challenge will be aching and dripping in your cage as you watch in denial.