What is the first thing あなた would say when あなた meet Ironman..??

Say "Mother of God.... .... ITS IRON MAN!!!"

I think I would stare him for a while, I don't know if I could say anything.

I don't know. Maybe...
"Please make me a suit that can fly."

I would just stand there open mouthed, blink a few times then..
SCREAM LIKE ANYTHING, then ask for his autograph. :P

I would probably go stiff and scream with joy in my head!!
The i would probably try my best to act cool and not scream with happiness XD

I think I'd try to persuade him that the difference in age doesn't matter at all... XD