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Amy & Helen were in the dormitory when they found you wearing their panties over the top of your trousers and on your head, while also very aroused! They were not impressed and have dragged you up to Matrons room as they have a plan for you. They both know about Matron’s special solution, the one that when injected through a very large needle directly into the penis can have all kinds of disastrous effects. As they wave the solution in a large syringe in front of you they tell you how you are nothing but a dirty perverted loser and how the solution will make sure you never masturbate over girls panties ever again. They make you drop your trousers & panties and Amy gets onto her knees while Helen holds you cock still. You shudder as your cock is injected, but this is only the beginning. As the girls put the needle away they tell you how your dick will soon shrivel up and turn black, and then eventually fall off completely, leaving you with nothing but a pair of very lonely & full balls!