Where does this stuff come from?

I am used to having characters insert themselves into my stories without my permission, but I’ve reached a new low point in the control over my creations.  I now have a chicken, a Klingon Bird of Prey, and two characters speaking in Klingon.   And I am going to have to learn to use Ello, because one of my characters does.  And this isn’t sci-fi!  It’s real life!  (Maybe I’m losing my mind?)