I had been on the folk scene for twenty years before I grew my first beard (thought that I might look scruffy facing the public at work while growing one until then).
Wear sandals in the summer, never with socks, but more than often it is trainers.
Used to smoke a pipe as well as tabs and cigars until I stopped smoking thirty years ago and drank real ale until I knocked beer on the head five months ago.
The best one I heard was a couple of years ago when a theatrical friend of mine introduced me to some of his troupe by saying "Dave writes the Folk column for The Post; but you wouldn't think it to look at him!"