So far the questions I have prepared are:
1. What are the most important skills for the job?
Can you guess what colour underwear I'm wearing?Trying to think of a 5th and final question.
Shouldn't you know the answer to that?
Do it standing up and still dress appropriately for an interview, you'll feel more focussed.
Dress up for it and do it standing up. Trust me - this will result in a more professional sounding interview.