Melissa picked the vibrator up off the ground. Then she slowly spread Sarah's nether lips with her left hand and nudged the head of the vibrator in with her right. Sarah moaned softly as Melissa worked the full length of the vibrator into her wet, yielding pussy. Melissa flipped a switch on the back and a deep humming sound filled the room. Sarah's eyelids shot open and she began to work her hips in a circular motion, involuntarily. Melissa quickly clasped her left hand over Sarah's mouth while pumping the vibrator in and out of her friend's pussy with her other hand. Sarah's whole body began to spasm and her face began to clench. She shoved her hips violently into the air, but Melissa laid on top of her, pinning her to the ground. Tears rolled down Sarah's cheeks as every muscle in her body began to spasm.