A stealthy method of dry humping. One partner places a sheet over his head (resembling a ghost) and proceeds to lay on top of his victim and remain motionless for an extended period of time. As the ghost play progresses, gentle rocking by the apparition may enhance the experience of both partners. When the ghost is finished, he throws the blanket over the victim's head and quickly evacuates the premises, resulting in confusion and disorientation. Was that a ghost?
Michael: "what just happened? I was in the other room and heard commotion! Was there a ghost in here?"
Gina: "I don't know what happened! It must have been ghost play!"