In the quiet stacks of “girls mastubating,” she hides behind ancient books, skirt lifted, fingers buried knuckle-deep in her dripping cunt. The risk of being caught makes her even wetter for “girls mastubating.” She bites her own arm to muffle screams as she rubs her clit furiously with the other hand in “girls mastubating.” Her pussy makes soft wet sounds that seem deafening in the silence of “girls mastubating.” Suddenly she cums hard, thighs clamping around her hand while juices run down her legs in “girls mastubating,” leaving a forbidden puddle on the library carpet that will confuse the next patron who finds it after watching “girls mastubating.”