Thank your interviewer for coming in and ask them for their CV; read it, hand it back and tell them you will be in touch after you have met with some other people, while you write 'you will never hear from me again' on the whiteboard. If they don't have a whiteboard or at least a flip chart complain loudly about lack of resources and a headache. Show your interviewer out, pointing out their dandruff and interesting personal odour blended from day old BO, Old Spice and Tandoori Chicken sandwiches from the local deli.Relax.