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Kan Jiu 8

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Immediately after hearing that the Experimental Sperm Collection of the Biological Research Department was pas

👍 98% Liked • 02:59:27 • 4K UHD

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The female students in the school's biology research club began researching "sperm flagellation activity." They recruited male students on campus to provide the necessary sperm and formed an ejaculation monitoring team. Curious about how to provide the sperm, I went to the club office to inquire... and was immediately hired and had my sample collected on the spot! Initially, it was just about using a vibrator to assist ejaculation, but to collect enough sperm for the experiment, the activities escalated and intensified...

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