I hate bad Japanese in general, but one that's been popping up a lot lately (I've seen it in a couple of fics recently) is Naruto referring to Sasuke as "The teme." This may come as a shock to some, but teme does not mean "bastard", or "jerk", or "a**hole", or "meanie poo-poo-head" or anything like that. It's not even a noun. It means "you". As in the second person singular pronoun. I know, I know, the subtitles say all that other stuff, but that's because teme is a particularly rude way of saying "you" for which there is no English equivalent. The subbers' most important job is to accurately translate the message, not the literal meaning of the words.
Whenever I read "the teme" I cringe. It just looks ridiculous.
I have read quite a few fics that do this, actually. I cringe as well, but I'm slowly getting used to it. After all, about 75% of Fanfiction writers don't check Japanese terms before using it. So, it either ends up calling Naruto 'the dobe' or 'the dope' (that one I don't get) and Sasuke 'the teme'. Teme simply as, Illjwamh says, it's a very crude way of saying YOU. Same with using the word Kisama. Both are very rude terms of Japanese saying YOU. So it just annoys me sometimes when I hear.. OMG SASUKE, YOU TEME! D<. It kinda ruins the story effect.
Yeah. I could say the same thing for you in this post. XD. My fanfiction peeves are somewhere in this thread... but I'll add another one. There are always people that put: 'I suck at summeries.' (exact spelling) or the most retarded titles and summaries I've ever read. Now, if you're gonna write a story, please have common sense and put in a proper title or get someone to beta your summary for you. PLEASE.