Derrick, you are quite mistaken about the specific character of urban legends (thus properly named). Nessie and UFOs are ordinary myths, a different species, even if sometimes told in the FOAF narratives.

To qualify as an urban legend, a story must have the taste of an ordinary news story from commercial mass media, usually spiced with fragments of science (- psychology, in this case). Often the two genres become indistinguishable: my aunt's friend of a friend is my newspaper's "reliable but undisclosed source". April fool hoaxes grow wings so easily.

Our cigarette buyer is comparatively harmless; I guess he flew out of some pretty realistic novel or film, just slightly pointed.