It's true. Hukthak was right.
I've been waiting to drop this little revelation for about a year now. On the grand scale of things it's pretty insignificant, but it's just the sort of ridiculous thing Donovan would do. He even gave us a little "wink" at the beginning of the story after giving an example of his bad orcish.
As for his "old saying" today, that's a Vincent van Gogh quote I just slightly modified. I was originally going to make it an inspirational quote for orcs in the vein of, "you've got a second chance, so stop whining and get off your ass to do something with it!" but the reaction ended up looking more shocked at the forwardness of the statement than the fact that he just spoke perfect orcish. Something poetic seemed more fitting, since he really had been speaking nothing but gibberish up until today.
But just because he's been doing it on purpose this whole time doesn't mean that he's going to stop doing it any time soon. That Python-esque dialogue is too fun to write.
That's all from me for now.