Every so often the university will send me a student for a private lesson, which is how I found myself in my office with Penelope Cum. Penny was progressing well in her studies, though her knowledge of the muscular system was lacking. We went over a few muscles, and I grew bored. My attention was piqued when she asked about reproductive organs. I offered to show her my balls as a joke, but shockingly, she accepted. I pulled out my genitals, and she got close to inspect them…then asked to lick them! I wasnt about…
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