I fly (sorry, flew) light aircraft. 150hp or less, nosewheel undercarriage, cruising speed around 90 kts. Fun, but not terribly exciting.
Now Spitfires are aeroplanes too. They do the same things. So in theory yes, I could fly one. However...
I would come to grief for two reasons. Firstly, the undercarriage. Spitfires are taildraggers which I have very little experience of. Thats not an insurmountable problem, but taildraggers require skills I never learned. It would be just as well that the Spitfire has better handling characteristics than many aircraft of this time.
The second reason is the engine. 28 litres of Rolls-Royce Merlin is a little more than I'm used to. Aero-engines of this nature put out between 10 and 20 times the power I'm used to, and this brings with it a whole host of handling problems I've never encountered. It would be a bit like passing your driving test, getting into a formula one grand prix car, and expecting it to stay on the road. This is why airmen were taught advanced handling on Harvards or Miles Masters before they got their nine hours hands on. How they managed to get pilots into the air when things were desperate and training was cut short is beyond me. It wasn't just our air force either. Imagine being put behind the controls of a BF109K at the end of the war - A cantakerous heavy fighter, 2000hp, poor pilot visibility, almost no training, hardly any experienced pilots left to tell you how to survive, enemy strafing attacks at any moment... Ouch.
Ok, I fly FS2004, IL2, etc etc. Not quite the same as opening the throttle on a real one though is it? Anybody got one I could borrow? I'll bring it back in one piece, honest...