Dr. Gigi Allens turned her love of cock into a rewarding career studying male arousal, and her latest project is trying to cure erectile dysfunction. She brings in two subjects who are incapable of arousal...

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Amirah is hard to impress, but her new boyfriend managed to sweep her off the feet... partly with his flashy home, partly with his bike... oh, and with his massive black cock. That tool is something Amirah...