If they were looking at my knickers, I think I'd say 'echi' which is a milder version of 'hentai'. Actually, come to think of it, I know quite a few rude words. PM me for them. Language-wise, I should be okay. I've been taught how to say the bare necessities, and I've been swatting up on my vocab as well, which in turn has taught me a useful number of kanji.