Seeing as how I'm still a virgin...My reaction would be an amused "Shit. Neither of us knows what we're doing? ...Guess we'll just have to make it up as we go along then". And then be EXTRA gentle and make sure she gets what she needs out of it.
As for EXTRA EXTRA Virgin (olive oil)? I'd probably have a very confused "Wait, really? Seriously? Wow...Uhh...What are you kind of expecting here, so I can try to ease you in, kinda?" And try my best to make sure they get off with as little trouble as possible on their first time. Because your first one is kind of a massive shock. Had mine by accident (no joke) and I just lay there for a few minutes going "What the actual hell was that?! ...Oh. OH THAT'S what that is! Wow no wonder the ape-shit crazy morons I go to high school with are obsessed with sex".
The Almighty Aardvark said:
And something like 10-15% of women will never have an orgasm at all.
Hot damn, I feel kinda bad for them. >_> If that's the case there's virtually no reason (outside of wanting kids) to even have sex. I'd...Have issues having sex with someone who can't really enjoy it.