In the quiet stacks of “most viewed video on porn hub,” a prim librarian type hikes up her pencil skirt under the table. No one sees her fingers dive beneath silk panties. “most viewed video on porn hub” hides the camera low, catching every furtive circle on her clit. Her breathing grows ragged; she bites her lip to stay silent as she comes, thighs clamping around her hand while pretending to read.