The combination to be on guard for is young and bored, or young and resentful. You can spot them at social gatherings, the grad students or interns who tell you about syndromes, conditions, deviances, and disorders, and they love, love, love to talk. They speak in half-sentences with a knowing smile-squint, watch you falter at the pause, and then keep talking.
The Contortionist's Handbook (ed. HarperCollins UK, 2014) - ISBN: 9780007402786