Some of the air travel web sites have a thread about people whose view of their self importance is inflated beyond any reason. These are often called "DYKWIA" for short - Do You Know Who I Am? people.
I had an encounter with a DYKWIA person who was a travel snob. A group of people from all over the world were on an excellent walking tour of Berlin. This individual seemed to think she was superior to the average tourist, in fact, calling her a 'tourist' would trigger a dirty look and a 5 minute lecture on her superior way of traveling. Thinking I might avoid being the subject of her lectures, I made the comment that I was a traveler as I talked to another person, thus avoiding that other 'T' word. Ms. DYKWIA was not impressed. She immediately shifted gears, interrupted our conversation, and informed me that she was a 'soujourner', not a common scruffy traveler like all the others on this walking tour. She then proceeded to lecture us on her far superior method of traveling the globe, and all the exotic places she had been and planned to go to. We finally moved away from her as he constant yapping was distracting us from a very good talk from the guide.
Thankfully, I have never met any such 'soujourners' on an RS tour. :-)