A gentleman? Me?

Today, on my journey in the train back to work, there were a group of children in my coach, from a summer camp or whatever, even though school is not over yet in this country, with their monitors or whatever you call the adults taking care of them. They were very noisy (the children), but not in an annoying way, even though they did make reading difficult. They accompanied until the final stop, the station of my town of residence. As they were about to leave, the adults asked them to "let the gentleman go first". I found it very funny. Me, a gentleman. I know it was used in the colloquial sense, to be polite and to show politeness to the children, but still. I don't think this fits me well. Gentleman has something from the aristocracy I have never belonged to. I am middle class and my parents were from working class backgrounds. I actually don't want to be a gentleman.