@MotherDucker A female friend of mine says when she was in college, she was in a dorm that alternated between male and female floors. Whenever a guy arrived on the floor he was to shout "man on floor." There was one custodian who would never do this. He'd just quietly say, "man on floor." So they were always having to be alert for him. They gave him a nickname I can't remember now, but you can imagine the gist of it.