Testing the limits of platonic friendship with a female college student through a penis sketch intimacy survey! We thoroughly investigate how long male-female friendships can last. This time, the subjects are two classmates from the same seminar. After an astonishing incentive offer, excitement builds and leads to full penis exposure. Surprisingly calm and skilled at drawing, the college girl shows little reaction despite the tension, so an even more shocking reward prompts a "grinding" experiment. What started as innocent friendship quickly turns into genital contact, and before they know it, his erect cock slips inside her pussy. This experiment proves that friendship cannot survive physical intimacy, ultimately resulting in full-on hardcore sex!