In the dimly lit stall, a curious pair of lips parts, ready to receive its first offering from the gloryhole. A thick, veined cock pushes through the partition, throbbing with anticipation. The lips, hesitant at first, slowly engulf the head, tasting the salty pre-cum. With each tentative bob of the head, the lips gain confidence, taking more of the shaft until they're expertly blowing the stranger on the other side.