When I lived in Chicago, I was a member of a big camera club. They rented a suite in a downtown office building. One evening I went in the john just across the main hallway.

1st graffitti line: "I'm 21, and have 19 inches; phone...."
2nd graffitti line: "I'm 19, and have 21 inches; phone...."
3rd line: "Fort Dearborn Chicago Camera club needs two tripods; apply in suite #...."