In the Star Wars trilogy, at some point a minor character cried/grunted something like "jabba jabba" (no relationship to the Hutt) or "joba joba". I believe this was in reaction to something the droids, in particular R2D2, did. Apparently it meant something like "have to go back to work". I don't believe it was an Ewok, but something similar. Which character was it and where in the movie (link would be awesome)?
You're almost certainly referring to scene 71 and scene 72 in ROTJ.
Logray the Ewok says "Jubba Jubba Jubbo" just after Solo says "He's an old friend of mine" at 1:12:00.
He repeats the same sound (it may actually be the same sound-clip) in the 'Golden God' scene, just after C3P0 threatens to make the village go boom at 1:14:32.
It appears to indicate something like 'let's get on with it'.