1. Two pairs of shoes and one pair of trainers that actually get worn, plus a pile of old footwear (at the bottom of the wardrobe) that I keep meaning to either wear or throw out but never actually do anything with.
2. I hope I never meet any girls who answer 'Yes' to that one.
3. Shoes are definitely better than chocolate when walking on hot sand. (Your feet get all gooey with the chocolate).
4. It was 7 for many years, then 7�, then 8, now it's 9! Either shoes are getting smaller or something strange is happening to my feet ;-)
5. I used to referee local football matches. Up to 20 referees would be getting changed together at times. There was one (Football League) referee whose 'physical attribute' always caused a gasp of amazement, as soon as he left the room, from those who'd not seen it before. However, in all of the years I knew that guy, I never heard one person remark on the size of his feet! ;-)
6. Unlikely, but there's probably a university somewhere which would award you a PhD for studying it.