Comment by jajko

That's very easy - go to area of train station, or some nearby park, and look for immigrant-looking people just standing around, trying to keep eye contact with passers or saying quietly "bonjour".

95% of the time you will get exactly what you want, otherwise it would be some form of "desolee". This is obvious, everybody knows and sees it, en masse (as in you are choosing from tens of such people in given area).