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Our virile instructor, clad in form-fitting gym shorts, delivers a hands-on lesson in self-control. He dry-humps a plump pillow, his engorged cock straining against the fabric. Sweat beads on his skin as he fights his primal urges, teasing himself to the brink of ecstasy before backing off. His body trembles with effort, his breath coming in sharp gasps. He loses count of his explosive climaxes, each one leaving him more spent than the last. Yet, he persists, driven by an insatiable curiosity and an unquenchable thirst for sexual knowledge.