House of ill repute
See if you can work this out:
There was a brothel at the top of a hill, with a large red light at the bottom of the hill.
There were four men ..........
One was walking briskly up the hill;
One was inside the brothel;
One was walking slowly down the hill and
The fourth man was sitting in his car at the bottom of the hill.
What were the nationalities of the four men?