In the scene where they just blew up the Star Destroyer, and it crashes into the Death Star. The squid people start cheering,(i forgot the name of their race,) when the cheering dies down, someone will yell in the background "Die Dickheads!!" You have to listen very carefully, i missed it the first few times.
Well, I listened real closely and there is definitly something that sounds like "I, igget!" which can sound like what you say it is if you want it to. It's all the power of suggestion. I, personally find it too muffled to be sure, but I doubt they would use an insult that wasn't even in the public lexicon at the time.
Gungan Din, you are not using the word "lexicon" correctly. A lexicon helps you translate from one language to another by telling you what each word means.