Sarah had nearly stripped naked before she noticed what was happening. Chelsea was hugging her seductively, pulling off her college uniform one piece at a time while kissing her. She was so hot. It was so wet - right here in the small rec center bathroom. Chelsea was playing with her breasts and pinched her nipple slightly too hard, the pain shook Sarah awake slightly. She blinked, gasping at the stimulation and sinking to the floor in panic. Chelsea held her, opening her mouth wide and leaning in. Sarah watched in horror as a large, blue, phallic creature emerged from her throat and began probing at Sarah's mouth. Below, another werm slipped out of Chelsea's pussy and began crawling up Sarah's leg, thrusting into her wet pussy. The double penetration was too much, and Sarah slipped back into a pheromone-induced sexual stupor as the parasites buried themselves deep inside her orifices.