Salt Lake City has a law on the books from 1873 that bans all shoes more than 13 inches in lengths from toe to heel. It is unclear why this law was passed, but there are two competing theories. One is that it was a measure designed to keep lawless cowboys out of the city by banning their long boots. The other theory is that male prostitutes were in the habit of wearing extra-long shoes as a clandestine advertisement of the length of their penises.