In the dim light of the shared wall, the neighbor's head bobs rhythmically, her mouth stretched wide around his thick cock. She looks up at him, her eyes watering, as he fucks her face, one hand on her head, the other pinching her nipples through her thin shirt. She moans around his length, the vibrations sending shivers down his spine. He grabs her hair, pulling her off him, his cock glistening with her saliva as he tells her to be quiet, not to wake the others in their apartment building. She nods, taking him back in, her enthusiasm undeterred.