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Your stepmother is resting after a long work day when you come in telling her you have to talk to her. The past few weeks you've been enjoying your stepmoms breast milk and noticed something, well... happening to your cock. You tell your stepmom that her breast milk is making your cock grow. She doesn't fully understand but eventually catches on that you want her to help you out. She agrees and gets on her knees and is amazed by how massive your cock is, she strokes sucks admires your huge cock, covering it in her breast milk, self sucking and spraying her breast milk before begging to drain your massive cock of cum, until you cover her breasts and face in cum.