The not-very-exotic man

I was on my way to have some travel vaccinations, trying to work out which exit to take out of Turnpike Lane station when a middle-aged man in an anorak and a baseball cap and funny little glasses approached me. He asked me where I was from, and commented that he thought I was from somewhere exotic, because I looked exotic. I told him that I was in fact not at all exotic, just plain old English. He asked me lots more questions about myself, and again I found myself answering them (note to self: need to stop being so polite in odd situations). The man seemed a little left-field, but harmless, although he reminded me slightly of Robin Williams' character in the film one hour photo. However, after a few minutes of questioning and attempted conventional conversation exits, I had to walk away from the man whilst he was still talking to me.