Re: Firefly first-time/rewatch (NO SPOILERS, please)
Gee whiz isn't specifically an Australian "slang". It just means someone that is too innocent and a bit socially inept. Anyway, Inara would have to get past Kaylee to get to Simon. But then again, Kaylee looks up to Inara and would probably let him go without a fight and then be passive aggressive.
Sir Isaac Newton is the deadliest son-of-a-bitch in space.