[PvK]

I'm racist against Gungans only. Or, against George Lucas' portrayal of them. I'm not sure what southern cultural group exactly Lucas' folks imitated in creating Gungan dialect, but I sympathize with them that it was used to make an utterly annoying sci fi space alien culture. Imagine being told you talked like a Gungan...

... as for why GL would do it, it was just a sarcastic joke about GL's tendency to mess stuff up with stupid overdone pointless CGI, like the extra flying robots in the new and abused edition of Star Wars Episode IV.