Viva Athena, in tight yoga pants, is stretching when Dr. Grey, her instructor, accidentally slips his throbbing cock between her ass cheeks. She gasps, feeling his thickness against her asshole. He tries to pull out, but she pushes back, hungry for more. He slides in, and they both moan. Two deep thrusts later, he creampies her. Shocked, they separate, but her ass cheeks, slick with lube, slip down his shaft again, and he shoots another load inside her.