Alligator in its 26 January , issue published photos of holes drilled in stall walls of bathrooms there. People who have sex in the aircraft lavatory are said to have joined the Mile High Club. According to Mark D. The initiator knocks his foot under the wall that divides two toilet stalls so that the person in the adjacent stall can see it. Through the smaller holes, men were able to voyeuristically watch each other or transfer notes for dating. In the "doggy's sink" position, the passive partner leans over the hand basin , and is penetrated from the rear, giving the active partner a view of the passive partner's front in the mirror. The paper reported men between the ages of 17 and 50 having sex in the university bathrooms. With the man fixed in position, the other partner sits on top of him. They continue this process until both of them are sure that the signal is really for sex. Through the larger holes, also called " glory holes ", voyeurs were able to watch others masturbating in the adjacent stall. Sacks and Peter Thiel , in their book The Diversity Myth, noted that at Stanford University , holes were drilled in the walls between toilet stalls in men's bathrooms, specifically in those located in the history department and in the libraries. Cottaging A glory hole is visible in the wall left in this toilet in California. If the second person responds by making knocks in a similar fashion, the first person extends his foot farther into the other person's stall. Sometimes the stall walls had large gaps between their lowest level and the floor, enabling men to have sex without a hole. According to Gay Men in Modern Southern Literature by William Mark Poteet, some members of the military have gay sex in bathrooms to break the military moral code or, as he describes it, "the heterosexual masculine fortress of pure and decent sex.