"Toon" doesn't carry the same connotations for plenty of other players, and they couldn't care less about the term. Why should they, when there are so many other pet peeves to fret over -- like players who type "PST whisper" or "PST me." PST is an acronym for "please send tell"; it's not meant, as some players mistakenly believe, to represent the more onomatopoeiaic "psst" sound. There's no need to add anything else after saying PST. In fact, you shouldn't allow your "toon" to "PST anybody," ever. Ouch.
Is there a snippet of MMO lingo that grates on your last nerve? What about it drives you batty?