Here's what I don't get about the censors.

[seiferalmasy2]

bah I was wrong....I should have known better becuse I know a little katakana...

That is a small tsu, and simply elongates the "ke" sound to "Keh" (shortening of e sound, makes it sound sharp) which is just equivalent to the sound "tsk" that one makes when they are irritated for example

So barret doesn't actually curse there at all, although in context he can be made to say something light hearted such as "crap" and so forth, but barret was never a Mr.T to begin with....