The young man now naked, his hands tied behind back, was forced to kneel forward on the bed. The bitchy, busty Mistress came from behind, spread his legs and grabbed his balls pulling them back between them almost lifting him up. She then placed a plastic like clamp behind his ball sac (he couldn't see!), and then roughly, pulling him by his penis, turned him over and swiftly put another piece of clear hard plastic(over) his shaft. Quickly, inspite of his resistance, she aligned the pins and locked the contraption into place with a metal lock. She placed the key inside her sweater< I assume in her cleavage of her huge breasts. She breathed and expanded her huge chest, which even the ribbed sweater couldn't hide, indeed accentuated. "Yes, take a good look at these ass hole because you will never touch them". What had just happened to him, he wondered ??
Much better effort. Short and hard and to the point. Keep going with this Mistress I liked your fantasy. Well done.