A futanari scientist, clad in a lab coat and mask, lures a small-dicked babe into her lab for a "study." She strips, revealing her massive, throbbing cock, and orders him to suck. He obliges, but his meager efforts only amuse her. She climbs atop him, her colossal tits smothering his face as she rides him reverse cowgirl, their bodies slapping in rhythm. She then lifts him, impaling him on her dick, and bounces him, his tiny cock flapping helplessly, until they both collapse in a sweaty, panting heap.