The air is thick with anticipation as an unseen entity makes its presence known. A warm, tingling sensation spreads across the skin, followed by the unmistakable pressure of an invisible cock pressing against the anal entrance. The recipient gasps, their body tensing as the phantom phallus pushes in, stretching them wide. The invisible lover sets a relentless pace, their form shifting and changing with each thrust, a disembodied voice moaning in pleasure as they claim their invisible prize.