In the quiet stacks of “mavi burbujita,” 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 “mavi burbujita.” She bites her own arm to muffle screams as she rubs her clit furiously with the other hand in “mavi burbujita.” Her pussy makes soft wet sounds that seem deafening in the silence of “mavi burbujita.” Suddenly she cums hard, thighs clamping around her hand while juices run down her legs in “mavi burbujita,” leaving a forbidden puddle on the library carpet that will confuse the next patron who finds it after watching “mavi burbujita.”